The opinion of the court was delivered by
Wachenfeld, J.The plaintiff, Prosecutor for Union County, appeals by leave of the Appellate Division, granted pursuant to R. R. % :2-3, from part of an interlocutory judgment rendered in the Superior Court, Chancery Division, on October 9, 1956. We granted certification on our own motion.
The defendants are members of the Legislature of the State of New Jersey and by Senate Concurrent Resolution No. 4 (1956) are designated and function as the “Joint Legislative Committee to Study Wiretapping and the Unauthorized Recording of Speech.” The defendants hereafter are referred to as the “Committee.”
During its study and investigation the Committee requested certain information from the plaintiff concerning his knowledge of wiretapping activities. On July 18, 1956 he appeared voluntarily before the Committee at a closed session and there disclosed that on three occasions he had obtained information by way of wiretaps on telephone lines of suspected violators of the criminal law. He contended his actions were not in violation of N. J. S. 2A: 146-1, which makes the willful and malicious interception of telephonic communications a misdemeanor.
While plaintiff voluntarily revealed the nature and scope of his own activities, he withheld all other information from the Committee regarding these transactions on the basis that as a matter of public policy he was obliged to guard against the disclosure of confidential communications and to protect the identity of informants. Plaintiff’s interpretation of N. J. S. 2A :146 — 1 was not concurred in by the Committee, which took the view that the law applied as stringently to him as to anyone else.
Subsequent to his initial appearance, plaintiff was requested by the Committee’s counsel to appear at a public hearing in *349Trenton on July 23, 1956 in order to give a formal statement defining his interpretation of N. J. S. 2A :146-1. When plaintiff complied with this request, he was served with a subpoena, returnable on the following day, requiring him to testify and to produce certain office records relating to the information he had withheld at the closed session on July 18, 1956. In general, the subpoena demanded all evidence and writings relevant to the premises of the Committee’s investigation, including the names and addresses of all persons who had performed, recommended, procured or assisted in wiretapping during plaintiff’s term as prosecutor, whether outside agencies or members of his personal staff. By mutual consent, the return date of the subpoena was postponed from July 24, 1956 to July 27, 1956.
In the interim before he was compelled to appear, plaintiff instituted an action by way of verified complaint and order to show cause seeking injunctive relief and a declaratory judgment. The determination of this cause in the court below constitutes the foundation for the present appeal.
Plaintiff invoked the jurisdiction of the courts upon the representation of an insolvable dilemma which would place him in criminal jeopardy for the assertion of legally protected rights. . He deemed himself faced with two alternatives: he could either appear before the Committee and divulge the information which it sought, or he could refuse to disclose the so-called law enforcement secrets and run the risk of violating R. S. 52:13-3, which he conceived to be unconstitutional.
R. S. 52:13-3 is part of the comprehensive scheme set forth in chapter 13 of Title 52 for the summoning of witnesses before legislative investigating committees and their punishment for contempt. Among other things, it provides:
“Any witness who refuses to answer any questions decided by the committee to be proper and pertinent shall be guilty of a misdemeanor. * * *”
*350Plaintiff maintained that the threat of criminal prosecution under a statute reasonably believed to be unconstitutional was sufficient cause to invoke the application of the Declaratory Judgments Act, N. J. S. A. 2A :16-50 el seq. and also to entitle him to the injunctive relief which he prayed. He asked for an adjudication respecting the constitutionality of R. S. 52:13 — 3 and his rights to withhold the information demanded.
After hearing and consideration of memoranda, the Superior Court, Chancery Division, ruled only: (1) that it had jurisdiction of the cause; (2) that B. 8. 52:13-3 was constitutional; and (3) that the plaintiff would have to appear before the Committee and to yield certain information and records relating to his wiretapping activities, subject to the conditions enumerated in the court’s opinion. These conditions generally permitted the plaintiff to withhold any information relating to the identity of those persons who had actually performed or supervised the wiretap operations, with the exception of members of his staff.
Plaintiff appeals only from that portion of the trial judge’s order holding R. S. 52:13-3 to be constitutional. His complaint raised a multitude of other questions which are not, however, presented by the record before us. Defendants, according to the terms of an order entered on October 24, 1956, were granted leave by the Appellate Division to cross-appeal from any part of the order of the Chancery Division which was adverse to them.
Before the Chancery Division, and in its brief on appeal, the Committee maintained the courts had no jurisdiction to adjudicate the constitutionality of R. S. 52:13-3 because the plaintiff had not yet appeared before the Committee nor been directed to respond to any specific questions. It also challenged the jurisdiction of the trial court to enjoin the Legislature. Defendants argued that although the lower court had expressly disclaimed any intention of passing upon its jurisdiction to interfere with a legislative proceeding, and while it admitted a court had no right to trespass against the legislative or executive departments of *351government, it nevertheless accomplished jnst that by continuing temporary restraints upon a lawfully constituted and functioning legislative committee.
The plaintiff, undaunted by this claim, in turn insists he should prevail because R. S. 52:13—3 is unconstitutional upon the same principle, to wit, it contravenes the doctrine of separation of powers by arrogating to a legislative committee the function of determining whether a witness has committed a crime.
Although much could be written on the jurisdictional aspects of this proceeding, we are not, by reason of the status of the record, required to pass upon these questions since the defendants on oral argument before us withdrew their previous objections to our jurisdiction and joined in the petition that the constitutionality of R. S. 52:13-3 be decided.
We shall therefore adjudicate the validity of the last-cited statute, but this is by no means to be considered a precedent establishing a procedure whereby anyone who feels he might be “put upon” by the subpoena or questions of a legislative committee can turn to the courts for a declaratory judgment vindicating his surmise.
Plaintiff insists R. S. 52:13-3: (1) affords no standards by which a reasonably intelligent man can determine whether his refusal to answer will subject him to criminal sanctions and is therefore void for violation of the requirements of due process of law; (2) contravenes, as already stated, the doctrine of separation of powers in arrogating to a legislative committee the sole power to determine whether a witness has committed a crime; and (3) constitutes an improper delegation to a committee of a power to be exercised only by the Legislature as a whole. Particular reference is made to those portions of the statute specifying:
“* * * all witnesses sworn before any such committee shall answer truly all questions put to them which the committee shall decide to be proper and pertinent to the investigation or inquiry * * *.
Any witness who refuses to answer any questions decided by the committee to be proper and pertinent shall be guilty of a misdemeanor * * *.”
*352Each of plaintiff’s arguments is founded upon an interpretation of R. S. 52:13-3 with which we cannot agree. He submits that by its terms the statute entrusts the Committee with the sole responsibility and authority for deciding what questions are proper and pertinent and that the witness has no recourse from the Committee’s conclusion. He theorizes that the subjective determination of the Committee is the sole criterion of propriety and pertinency and that upon a refusal to answer he would automatically be guilty of a misdemeanor. All this would occur, says plaintiff, without the opportunity for judicial review as to the relevancy of the question and without regard to any privilege on the part of the witness not to answer. It is said: “The only question for the court to determine, in a prosecution under R. S. 52:13-3 is the question of whether or not the witness answered the questions before the committee.”
Plaintiff contrasts this situation with that prevailing under the federal statute, 2 U. S. C. A., § 192, where witnesses are afforded the protection of judicial review and have some criterion for determining in advance whether or not the question put to them is proper and pertinent. E. g., Sinclair v. United States, 279 U. S. 263, 49 S. Ct. 268, 73 L. Ed. 692 (1929).
The Committee, however, flatly asserts in its brief it has no intention of denying anyone the right to review. It says:
“There is nothing in the statute, either express or implied, denying anyone the right of judicial review of any committee’s determinations. Nor should this court now place such an interpretation on this law.”
Conceivably, the Committee could propound questions which are improper in substance or in form, but we cannot gratuitously assume this will occur. The procedure in this respect must ripen to the extent where specific issues are framed so that they can be intelligently presented and determined by an appropriate tribunal. No blanket adjudication in futuro of suppositious issues is warranted. McGrain v. Daugherty, 273 U. S. 135, 160, 175-176, 47 S. Ct. 319, 71 L. Ed. 580 (1927).
*353This proposition was aptly stated in Townsend v. United States, 68 App. D. C. 223, 95 F. 2d 352, 361 (D. C. Cir.), certiorari denied 303 U. S. 664, 58 S. Ct. 830, 82 L. Ed. 1121 (1938), where the powers of a legislative committee in carrying out its function were discussed at length. The court said:
“A legislative inquiry may be as broad, as searching, and as exhaustive as is necessary to make effective the constitutional powers of Congress. McGrain v. Daugherty, 273 U. S. 135, 47 S. Ct. 319, 71 L. Ed. 580, 50 A. L. R. 1. A judicial inquiry relates to a case, and the evidence to be admissible must be measured by the narrow limits of the pleadings. A legislative inquiry anticipates all possible cases which may arise thereunder and the evidence admissible must be responsive to the scope of the inquiry, which generally is very broad. Many a witness in a judicial inquiry has, no doubt, been embarrassed and irritated by questions which to him seemed incompetent, irrelevant, immaterial and impertinent. But that is not a matter for a witness finally to decide. Because a witness could not understand the purpose of cross-examination, he would not be justified in leaving a court room. The orderly processes of judicial determination do not permit the exercise of such discretion by a witness. The orderly processes of legislative inquiry require that the committee shall determine such questions for itself. Within the realm of legislative discretion, the exercise of good taste and good judgment in the examination of witnesses must be entrusted to those who have been vested with authority to conduct such investigations. Hearst v. Black, 66 App. D. C. 313, 87 F. 2d 68. A witness may exercise his privilege of refusing to answer questions and submit to a court the correctness of his judgment in so doing, but in the event he is mistaken as to the law it is no defense, for he is bound rightly to construe the statute. Sinclair v. United States, supra, 279 U. S. 263, at page 299, 49 S. Ct. 268, 273, 73 L. Ed. 692. Beyond this, he must conform to the procedure of the committee and respond to its questions. McGrain v. Daugherty, supra, 273 U. S. 135, at pages 175, 176, 47 S. Ct. 319, 329, 71 L. Ed. 580, 50 A. L. R. 1. He cannot be heard to plead justification and, hence, lack of willfulness in defiantly leaving a hearing because he does not like the questions propounded to him — remedy by objection and refusal to answer both being open to him.”
We must assume the Committee’s efforts are in good faith and that it will exercise, as said in the Townsend case, “good taste and good judgment” in the examination of the witnesses it interrogates during its inquiry.
*354The Legislature has the authority to investigate, and its powers in this respect are indeed broad. Normally, it has the power to obtain information on any subject relevant to the proper discharge of its legitimate functions. See Eggers v. Kenny, 15 N. J. 107 (1954); Quinn v. United States, 349 U. S. 155, 75 S. Ct. 668, 99 L. Ed. 964 (1955); Barry v. United States ex rel. Cunningham, 279 U. S. 597, 49 S. Ct. 452, 73 L. Ed. 867 (1929); Sinclair v. United States, supra; McGrain v. Daugherty, supra; 49 Am. Jur., States, Territories, and Dependencies, §§ 39 and 43. The necessity for the obtainment of such information is no longer open to debate and has been consistently and vigorously espoused.
Furthermore, it is elementary that a committee may be endowed with some portion of the investigatory power which the Legislature enjoys as a whole. See, e. g., In re Hague, 104 N. J. Eq. 31, 45 (Ch.), affirmed 104 N. J. Eq. 369 (E. & A. 1929); Tenney v. Brandhove, 341 U. S. 367, 377-378, 71 S. Ct. 783, 95 L. Ed. 1019 (1951); Barry v. United States ex rel. Cunningham, supra, 279 U. S., at page 613, 49 S. Ct., at page 455; Sinclair v. United States, supra, 279 U. S., at page 294, 49 S. Ct., at page 272; 49 Am. Jur., supra, at § 39. Cf. N. J. Constitution 1947, Art. IV, Sec. V, par. 2. Otherwise, the effective exercise of such power would be impossible and its benefits completely illusory. When a committee is authorized to conduct investigations, the creative resolution becomes the charter defining its authority. The committee must abide by the limitations thus placed upon its authority, and may not operate according to the mere whims and caprices of its members. 49 Am. Jur., supra, at § 42, states the principle as follows:
“The scope of the powers of a legislative committee and the matters which it may investigate are referable primarily to the act or resolution to which it owes its existence. Its powers are, generally speaking, as broad as the subject which it is directed to inquire into; when created and appointed for the purpose of securing information and data upon the need of legislation upon *355a given subject, it may inquire into any subject and any matter relative to tbe needs of legislation on the subject matter, the kind of legislation required, and the scope of the legislation needed.”
It is this resolution which supplies the referent enabling a court to determine whether an investigating committee has abused its powers by attempting to compel a witness to answer a question which is not proper or pertinent. United States v. Rumely, 345 U. S. 41, 73 S. Ct. 543, 97 L. Ed. 770 (1953); Sinclair v. United States, supra. The discretion of the committee is confined by the terms of the enactment which established it, and the witness can look to that act as a guide to making his personal decision as to whether or not he should refuse to answer a question.
It is true that such a committee enjoys very extensive authority to examine and investigate, since its “charter” is of necessity liberally construed. See, e. g., Townsend v. United States, supra; 49 Am. Jur., supra, at § 42. Moreover, as indicated by the Townsend quotation, it is essential to an efficient accomplishment of the legislative purpose that in the first instance the committee have the responsibility for determining whether a question is proper and pertinent and should be answered.
The procedure described in Townsend and sanctioned by other federal cases is identical with the rationale and purpose of R. S. 52:13-3. Our statute expressly states what the federal courts have decided is the import of 2 U. S. C. A., § 192; namely, that the committee has the initial obligation of making any determination of pertinency. Bart v. United States, 349 U. S. 219, 75 S. Ct. 712, 99 L. Ed. 1016 (1955). See Emspak v. United States, 349 U. S. 190, 75 S. Ct. 687, 99 L. Ed. 997 (1955); Quinn v. United States, supra. This is not to say that the failure or refusal of a witness to respond to a committee question automatically entails incarceration.
Aside from the presumption of constitutionality which attaches to every statute, 2 Sutherland, Statutory Construction, (3d ed. 1943), § 4509, the judiciary has a duty, when confronted with alternative interpretations which *356are equally plausible, to adopt the construction which avoids the constitutional issue and sustains the legislative enactment. Mr. Justice Frankfurter described this principle in United States v. Rumely, supra, 345 U. S., at page 45, 73 S. Ct., at page 545, where he said:
“Accordingly, the phrase ‘lobbying- activities’ in the resolution must be given the meaning that may fairly be attributed to it, having special regard for the principle of constitutional adjudication which makes it decisive in the choice of fair alternatives that one construction may raise serious constitutional questions avoided by another. In a long series of decisions we have acted on this principle. In the -words of Mr. Chief Justice 'Taft, ‘[i]t is our duty in the interpretation of federal statutes to reach a conclusion which will avoid serious doubt of their constitutionality.’ Richmond Screw Anchor Co. v. United States, 275 U. S. 331, 346, 48 S. Ct. 194, 198, 72 L. Ed. 303, [308]. Again, what Congress has written, we said through Mr. Chief Justice [then Mr. Justice] Stone, ‘must be construed with an eye to possible constitutional limitations so as to avoid doubts as to its validity.’ Lucas v. Alexander, 279 U. S. 573, 577, 49 S. Ct. 426, 428, 73 L. Ed. 851, [854], 61 A. L. R. 906. As phrased by Mr. Chief Justice Hughes, ‘if a serious doubt of constitutionality is raised, it is a cardinal principle that this Court will first ascertain whether a construction of the statute is fairly possible by which the question may be avoided.’ Crowell v. Benson, 285 U. S. 22, 62, 52 S. Ct. 285, 296, 76 L. Ed. 598, [619], and cases cited.”
There is nothing in R. S. 52:13-3 which expressly or impliedly precludes the right to full judicial review when a witness is charged with the commission of a misdemeanor for refusing to answer a question which a committee deemed proper and pertinent. It is common knowledge that an investigating committee usually, if not invariably, is represented by counsel who undertakes a good deal of the questioning. Quite conceivably, counsel, or one of the committee members, will ask questions which the witness believes exceed the scope of permissible inquiry or invade a privileged area, possibly resulting in a refusal to respond.
Under our interpretation of R. S. 52:13-3, the committee must then decide whether it considers the particular query to be proper and pertinent. This function cannot be left to the discretion of counsel or even one of the committee members, if more than one is sitting, because the others *357may well disagree and think the question is improper. The statute states the committee itself is to make the determination as to propriety. If the committee decides the witness is right, that particular question or line of inquisition will of course present no issue. But if the committee decides the witness’ refusal is unjustified, it may direct him to answer. If the witness remains adamant, then, and only then, the risk arises that he can be prosecuted for a misdemeanor. Bart v. United States, supra; Emspak v. United States, supra; Quinn v. United States, supra. Ultimately, the courts will have to decide whether the judgment of the witness or that of the committee was correct.
On many occasions the sense or spirit of a statute will prevail over the literal, logical, grammatical meaning of the words, if the latter is not in accordance with reason or the principal design of the statute. The most recent expression of the liberal judicial attitude which strives to avoid a narrow, pedantic construction in accordance with the empty principles of rhetoric alone may be found in Lane v. Holderman, 23 N. J. 304 (1957). See also DeFazio v. Haven Savings & Loan Ass’n, 22 N. J. 511, 518 (1956); In re Roche’s Estate, 16 N. J. 579, 587 (1954).
R. S. 52:13-3 has remained substantially unchanged since 1895. L. 1895, c. 83, §§ 1 and 2, p. 162. It has been involved in litigation several times, and in no case did the reviewing court advert or refer to any unconstitutionality. In re Kelly, 123 N. J. Eq. 489 (Ch. 1938), affirmed McRell v. Kelly, 124 N. J. Eq. 350 (E. & A. 1938); In re Hague, 105 N. J. Eq. 134 (Ch. 1929), affirmed 9 N. J. Misc. 89 (E. & A. 1930); In re Hague, 104 N. J. Eq. 31 (Ch.), affirmed 104 N. J. Eq. 369 (E. & A. 1929); State v. Brewster, 89 N. J. L. 658 (E. & A. 1916). (Eggers v. Kenny, supra, overruled In re Kelly and the second Hague case, at 105 N. J. Eq. 134, with respect to the restrictions they had placed upon the scope of legislative investigations.) Research shows the common practice has been largely consistent with the interpretation we have given, and we are content to affirm the validity of the statute.
*358The prosecutor originally insisted that his authorization of wiretap activities did not constitute a violation of N. J. S. 2A: 146-1 since he was acting in the public interest to secure efficient enforcement of the law rather than in a willful and malicious manner.
N. J. S. 2A :158-5 enjoins the county prosecutors to “use all reasonable and lawful diligence for the detection, arrest, indictment and conviction of offenders against the laws,” and the plaintiff urges he was merely fulfilling the duties impressed upon him by the statute according to his honest judgment of his responsibilities for the protection of the public.
We do not consider his activities reflect adversely upon either Ms integrity or ability. Indeed, while we differ with him as to his interpretation of the law, we recognize Ms motivation was commendable. The practice of wiretapping by other law enforcement officials throughout the State was not uncommon, and a prosecutor might well be under public pressure to adopt methods which had been deemed successful elsewhere.
However, N. J. S. 2A: 146-1 is all-inclusive by its terms. It makes no exception for public prosecutors or any other official charged with law enforcement. Reliance upon N. J. S. 2A :158-5, which directs the exercise of “lawful” diligence, is not justified.
Within reasonable limitations, the Legislature has the power and the right to designate the mere doing of an act as a crime, even in the absence of the mens rea which was a necessary prerequisite at common law. See State v. Labato, 7 N. J. 137 (1951); Halsted v. State, 41 N. J. L. 552 (E. & A. 1879); State v. Tracy, 29 N. J. Super. 145 (App. Div. 1953); 1 Wharton, Criminal Law (12th ed. 1932), § 143. Where words clearly indicating the requirement of a criminal intent are omitted, the issue becomes one of statutory construction to ascertain the meaning of the legislative body. See State v. Kuehnle, 85 N. J. L. 220 (E. &* A. 1913); Halsted v. Stale, supra; State v. Tracy, supra; 22 C. J. S., Criminal Law, § 30. Here, it would *359seem that the element of general intent must be proved before a contravention of the wiretapping statute can be established. We should not, however, confuse intent with motive. Proof of motive is never essential to a conviction but may be evidential. 22 C. J. S., supra, at § 31(a); 1 Wharton, supra, at § 156. An accused can steal to prevent his family from starving or kill to rid the community of a menace, but the laudatory qualities of the design do not absolve him from the application of criminal sanctions. 1 Wharton, supra, at §§ 137, 155. If it were otherwise, the administration of criminal law would become chaotic, since the prosecution would be compelled to analyze the psyche of each defendant and to prove that, in fact, it was malignant.
The ordained inquiry is whether the act condemned was committed with full knowledge of the facts, in a conscious and purposeful manner, without legal justification or excuse. It must not be the product of inadvertence or negligence or any state of mind other than a free' and untrammeled will. This is the definition of criminal intent embodied in the words “willfully and maliciously,” as used in this statute. The accused must intend to act in the way proscribed by the statute, but it is immaterial that he does not know or believe his conduct violates the law.
Even positive belief that the act is lawful should not exempt the doer from criminal responsibility. Consciousness of unlawfulness is not essential. 1 Wharton, supra, at § 160. If ignorance were a good defense, the administration of the penal law would again depend upon the well-nigh impossible ascertainment of hazy and amorphous mental conditions and opaque logic. When, with a clear knowledge of all the facts, one deliberately and intentionally does an act in violation of a positive law, cognizant of its existence, he cannot be excused on the basis that his animating desire was essentially praiseworthy. See 22 C. J. S., supra, at § 30.
The Attorney-General conceded as much during the oral argument, and the annual reports to the Governor of previous attorneys-general reveal a like conclusion that wiretapping *360by law enforcement officials is illegal. 1948 Report to the Governor by Attorney-General Van Riper; 1953 Report to the Governor by Attorney-General Parsons. The Association of County Prosecutors has also manifested the belief that its members may not have the right to tap wires under the provisions of N. J. S. 2A :146 — 1. 1956 Annual Report of the President to the County Prosecutors’ Assn. of New Jersey.
In addition to his attack upon R. S. 52:13-3, several other arguments are advanced by the plaintiff to support the propriety of his refusal to comply with the subpoena duces tecum issued by the Committee and his determination not to respond to questions which might be asked pertaining to his authorization of wiretapping. He insists there is a fundamental constitutional right on the part of the executive to withhold, in its discretion, any information from the legislative branch of the government. It is said that in seeking to compel the disclosure of information which the prosecutor has deemed to be confidential, the Committee is transgressing upon the doctrine of separation of powers and actually invading the exclusive province of a coordinate body.
A much more limited issue is also raised with respect to the privilege of a law enforcement officer to refuse to disclose the identity of informers and, incidentally, the contents of their communications. It is said public policy alone should prevent the Committee from requiring the production of information when publication thereof will have a deleterious effect upon the enforcement of criminal laws and the attainment of criminal justice.
Although it appears the judiciary of this State has never granted explicit recognition to the existence of a privilege against disclosure of informers, the privilege, as it originated at early common law, has been adhered to and protected for very practical reasons which courts almost everywhere have uniformly understood and accepted. See 8 Wigmore, Evidence (3d ed. 1940), § 2374. Many people would be deterred from giving information, relating to violations of the criminal law, to law enforcement officials by a justifiable apprehension *361that those whom they implicated would by some means ox-other exact reprisals if the source of such information were revealed.
Additionally, it is commonly acknowledged that in our society there is a general aversion to the role of informer, at least in so far as the less heinous crimes are concerned, and such persons are looked upon with some semblance of repugnance. Understandably, citizens would be reluctant to reveal criminal infractions if they were to be exposed and subjected to the unpleasantness and embarrassment which experience indicates would follow.
The authorities generally support the rule protecting the identity of informers upon the ground that disclosure might be harmful to the interests of the government and the public. Wigmore cites Hardy’s Trial, 24 How. St. Tr. 99 (1794), where the common-law rule was thus stated:
“* * * but there is a rule which has universally obtained on account of its importance to the public for the detection of crimes, that those persons who are the channel by means of which that detection is made should not unnecessarily be disclosed. * * * My apprehension is that, among those questions which are not permitted to be asked, are all those questions which tend to the discovery of the channels by whom the disclosure was made to the officers of justice; that it is upon the general principle of the convenience of public justice not to be disclosed; that all persons in that situation are protected from discovery * * *.”
There, Justice Buller in a separate opinion commented:
“* * * and if you call for the name of informer in such cases, no man will make a discovery, and public justice will be defeated. Upon that ground, therefore, it is that the informer for the purpose of a public prosecution shall not be disclosed.”
In the very recent case of Roviaro v. United States, 353 U. S. 53, 77 S. Ct. 623, 627, 1 L. Ed. 2d 639 (1957), Mr. Justice Burton wrote:
“What is usually referred to as the informer’s privilege is in reality the Government’s privilege to withhold from disclosure the identity of persons who furnish information of violations of law to officers charged with enforcenjent of that law. Scher v. United *362States, 305 U. S. 251, 254, 59 S. Ct. 174, 176, 83 L. Ed. 141, [154]; In re Quarles, 158 U. S. 532, 15 S. Ct. 959, 39 L. Ed. 1080; Vogel v. Gruaz, 110 U. S. 311, 316, 4 S. Ct. 12, 14, 28 L. Ed. 158, [160]. The purpose of the privilege is the furtherance and protection of the public interest in effective law enforcement. The privilege recognizes the obligation of citizens to communicate their knowledge of the commission of crimes to law-enforcement officials and, by preserving their anonymity, encourages them to perform that obligation.”
He went on to hold that the privilege against disclosure is not absolute and, when necessary, will be dissolved in the interests of justice for the protection of an accused.
The Committee submits, however, that the court below committed error in classifying wiretappers in the same category as informers, and there seems to be merit in this view. Those who tap wires are mere accessories to the disposition, control and regulation of the mechanical contrivances employed to accomplish that object. Their function is to record telephone conversations in a permanent form and to transmit the substance, so memorialized, to their employers. The person operating the tap acquires information of wrongdoing only as an incident to the pursuit of his primary function. If information of criminal conduct is secured in the form of an admission or evidence of participation, it comes from the mouth of the person whose telephone is tapped and not from the functionary who presides over the mechanical working of the recording process. He is not the originator or source of the information imparted to the agency of the law; he merely complies with instructions received from the police authority. Of course, a wiretapper may also be an informer under certain circumstances, but that is.not the factual development here encountered. Those persons who supervised and actually tapped wires for the prosecutor do not come within the classification or category of “informer.” The common-law privilege has no applicability to persons who undertake to tap wires in accordance with their employment.
Whether the prosecutor and those who acted for him contravened a federal statute, as well as N. J. S. 2A :146-1, *363raises another inquiry. Section 605 of the Federal Communications Act forbids the interception and publication of telephone conversations. 47 U. S. C. A,, § 605. There exists, however, a considerable controversy over its interpretation. The Department of Justice has apparently taken the position that to constitute a violation of the statute there must be both an interception and a divulgence of the information thereby acquired. Other departments of the government disagree, and there is some authority indicating that section 605 is to be interpreted so as to prohibit interception alone, regardless of whether there is publication of the information thus secured. See, generally, Donnelly, “Comments and Caveats on the Wire Tapping Controversy,” 63 Yale L. J. 799 (1954).
We are not presently concerned with the federal statute, nor is there need to give our interpretation. Whether the hiring of an outside agency by the prosecutor to tap wires and to return the information acquired constitutes a publication involves a question whose resolution is unnecessary for the decision of this appeal. We note it only to emphasize that even under the federal law the permissibility of the prosecutor’s action is doubtful, and the necessity for exercising the privilege of withholding the identity of informants is correspondingly diminished.
The privilege against disclosing the identity of informants and the contents of their communications has no applicability in the case sui judice. We conclude there is no valid or lawful reason for adhering to the common-law privilege since, under the circumstances here presented, the wiretapper is not an “informer,” and thus the Committee was justified in refusing to regard the prosecutor’s assertion of the privilege as valid.
With sole reference to the public policy element of the prosecutor’s argument, we do not believe revelation to the Committee of the names which it seeks will harm the public interest in successful law enforcement. The Legislature, as the foremost exponent of the public policy of this State, has condemned the tapping of wires as a method for achieving *364the detection and punishment of crime. It has thus interpreted and given expression to the popular will. In its opinion, wiretapping is’ not an acceptable means of law enforcement nor necessary to protect the common weal. Therefore, there is no need to conceal the identities of wiretappers. Their activities are not lawfully protected, and they should not be shielded so that they can continue to function, unimpeded by any considerations of illegality. The disclosure of the information sought by the Committee will not jeopardize the effectiveness of any of the legally recognized procedures for law enforcement.
Before considering the question of whether the Committee is attempting to derogate the constitutionally ordained separation of powers, it becomes pertinent to define the role which the prosecutor plays in the governmental structure. Despite the fact that the parties to this litigation initially advanced divergent opinions as to the prosecutor’s status, their supplemental research and briefs have brought them almost into accord. They agree that the prosecutor enjoys a rather unique status with respect to the traditional division of responsibilities between the executive branch and the Legislature, and the vertical integration of responsibility which normally results therefrom.
The historical development of the office of county prosecutor is interesting and lengthy, and a synopsis of it should prove helpful. At common law in England, the attorney-general was the chief legal representative of the Crown, and in theory his powers of criminal prosecution were almost unlimited. As a practical matter, however, the responsibility for securing enforcement of the criminal laws was left largely in the hands of private parties. See State v. Winne, 12 N. J. 152, 164-165 (1953). This distinction, if it ever received any recognition in the Colony of Mew Jersey, perished long before the Revolution, and the attorney-general commonly undertook to prosecute “culprits from minor offenders to murderers.” Journal of the Courts of Common Right and Chancery of East New Jersey, 1683-1702 (Edsall ed. 1937), 3 and passim. See State v. Winne, supra. Public *365prosecution supplanted private prosecution, and, consequently, at the time of the adoption of the Constitution of 1776, the first attoiney-general of the State of New Jersey possessed and assumed considerable powers of law enforcement.
Apparently, there is no legislation dealing in a general way with the authority of the attorney-general until 1812, with the exception of a law passed in 1795 whereby he was empowered to file an information in the nature of quo warranto by leave of the Supreme Court (Revised Laws of the State of New Jersey, 1703-1820, p. 207,) and an act passed in the same year authorizing the attorney-general, or an attorney “appointed by the court to prosecute the pleas in his absence,” to recover penalties on forfeited recognizances. Revised Laws, supra, at 210. In 1812, the Legislature enacted a measure explicitly authorizing the attorney-general “to appoint from time to time, as occasion may require, deputies for those counties of this state which he may be unable in person to attend * * L. 1812, pam. 23.
The preamble to this enactment recites that its passage was motivated by the existence of doubts as to whether the attorney-general could appoint deputies to prosecute the pleas in his behalf when it was impossible for him to do so in person. Each such deputy was to have the same rights, powers and duties as the attorney-general (see our present N. J. S. 2A:158-5), but it was specifically provided that “nothing herein contained shall prevent the attorney general from acting as such in any of the said counties, at any court which he may attend in person * * *.” If neither the attorney-general nor his deputy could attend, any court was given the right to appoint a substitute.
In 1822, by L. 1822, p. 25, the Legislature partially repealed the act of 1812 and thereby abolished the right of the attorney-general to appoint a deputy. Instead, the Legislature authorized the Courts of General Quarter Sessions of the Peace in each county to appoint a prosecutor of the pleas in the absence of the attorney-general.
In 1823 the Legislature determined to take upon itself the responsibility for appointing “prosecutors of the pleas.” *366It repealed the 1822 enactment, except that provision authorizing the courts to appoint a temporary prosecutor for a court term when the attorney-general was absent and where there was no prosecutor, and provided for appointment by the Council and General Assembly in joint meeting. The 1823 act stated the prosecutor should “* * * do and perform such acts and things in behalf of the state, in and about such prosecutions as the said attorney-general might, or ought to do, if he were personally present; * * It goes on to provide a five-year term for the prosecutor upon commission by the Governor and to subject him to dismissal, when adjudged guilty of misbehavior, by impeachment. L. 1823, p. 52. We find that here for the first time the prosecutor is given a specific term of office and authority to prosecute the pleas on a more or less permanent basis. This is the embryonic emergence of an independent office.
The Constitution of 1844 followed the trend by changing the character of both offices. Art. VII, Sec. II, par. 4, provided for the appointment of the attorney-general by the Governor with the advice and consent of the Senate for a term of five years. Pursuant to the same provision, the prosecutors were appointed in an identical manner for a like term. To conform with this constitutional change, the Legislature in 1846 repealed the enactment of 1823, providing in the Revised Statutes of 1846, page 832, that:
“* * * there shall be appointed for each county some fit person, who shall be an attorney and counsellor at law, whose duty it shall be to prosecute the pleas of the state in such county, in the absence of the attorney general: cund further, to do and perform such acts and things in behalf of the state, in and about such prosecutions, as the attorney general might or ought to do, if personally present.
* * * * * =1" * *
* * * the said prosecutors shall, severally, during the continuance of their appointments, be vested with the same powers, subject to the same penalties, and entitled to the same fees for services, in the absence of the attorney general, within their respective counties, as the attorney general is or shall by law be vested with, or subject or entitled to.”
*367Erom the unambiguous language of these enactments, we note a gradual modification in the common-law functions of the attorney-general. He retained the authority to prosecute the pleas of any county if he so wished. But the Legislature, first to aid and then to supplement his authority, created the office of the prosecutor to do what the attorney-general “might or ought to do” if he were personally present. Significantly, the Legislature was gradually establishing the prosecutor as an independent authority, not subject to act only on the order of the attorney-general.
In 1854 the Legislature enacted a law which had an important bearing upon both the attorney-general and the county prosecutor. L. 1854, c. 58, appears to be the first act which specifically defined the over-all powers and duties of the attorney-general and fixed his salary. Section 3 of the act is of paramount importance in the present inquiry. It specifies:
“* * * That after the passage of this act the criminal business of the state shall be prosecuted exclusively by the prosecutors of the pleas, except in counties where, for the time being, there may be no prosecutor, or where the prosecutor desires the aid of the attorney general; and when the attorney general prosecutes in a county having no prosecutor, he shall be entitled to the fees now fixed by law; and where he aids in the prosecution at the request of the prosecutor, he shall be entitled to one-half of the fees; and when the attorney general attends the trial of any case at the request of a justice of the supreme court, or of the board of freeholders, as provided in the first section of this act, he shall be paid such sum for that special service as the justice of the supreme court of that judicial district shall certify and fix, to be paid by the collector of the county in which the cause is tried.”
Prior to 1854 the relevant statutes had gradually authorized the prosecutor to exercise increased power within the county. They did not, however, purport to limit or expand the powers of the attorney-general, especially with respect to criminal prosecutions. The 1854 act, on the other hand, restricted the attorney-general to carrying out the criminal business of a county in four situations: (1) in homicide cases, or other high crimes on the written request *368of a justice of the Supreme Court; (2) upon request of the board of freeholders; (3) where there was no county prosecutor to attend to the general criminal business in the county; and (4) where the county prosecutor requested his aid.
In essence, L. 1854, c. 58, forms the basis for the present-day distinction between the jurisdiction and powers of the attorney-general and those of the county prosecutor. After 1854 the powers of the attorney-general to attend to criminal business in the counties were broadened in two instances. By L. 1911, c. 184, the Legislature supplemented L. 1854, c. 58, to authorize a justice of the Supreme Court to request the attorney-general, personally or through an assistant, to attend in any county for prosecuting the criminal business of the State,
“S; * * including the investigation of alleged crimes and misdemeanors, the attendance before the criminal courts and grand juries of the county, the preparation of indictments and the trial of indictments for crimes and misdemeanors, and upon the like request to represent the State in proceedings on error in criminal cases in the Supreme Court and Court of Errors and Appeals.”
While the courts and county authorities could request the attorney-general to handle general county criminal business, it was not until 1944 that the Legislature permitted the Governor to request the attorney-general to encroach upon the area usually exclusively reserved to the prosecutors. Even then, the Governor’s powers were limited to particular instances. The Department of Law Act, L. 1944, c. 20, empowered the Governor to request the attorney-general “* * * [to] attend for the prosecution of a specific investigation or of a particular criminal case * * *.”
From this outline of the evolution of the offices of attorney-general and county prosecutor, it is evident that the jurisdiction of the county prosecutor has been carved out of the original powers of the attorney-general. Judicial authority supports this conclusion. See State v. Longo, 136 N. J. L. 589 (E. & A. 1947); State v. New Jersey Jockey Club, 52 N. J. L. 493 (Sup. Ct. 1890); State ex rel. Clawson v. Thompson, 20 N. J. L. 689 (Sup. Ct. 1846).
*369Thus, we arrive at the presently existing situation under the Constitution of 1947, which strongly reaffirms that the prosecutors are largely independent of control by the attorney-general, who may intervene in the criminal matters of the county primarily by way of supersession upon request or as otherwise specifically provided for by statute.
By provision of the Constitution of 1947, both the attorney-general and the county prosecutor are constitutional officers. Both are appointed by the Governor with the advice and consent of the Senate. The attorney-general serves a term co-existent in length with that of the Governor, but the county prosecutor serves for five years, or until the appointment and qualification of a successor. The attorney-general, as head of the Department of Law and Public Safety, is within the executive department (Art. V, Sec. IY, par. 3), but the provision for the appointment of prosecutors is found in Art. YII, Sec. II, par. 1, “Public Officers and Employees.” These constitutional provisions fail to furnish any guide or standard with respect to the nature of the powers, rights, duties and responsibilities of either officer, and, consequently, the task of definition is left to the Legislature. E. g., State v. Winne, supra; State v. Longo, supra.
The Legislature has chosen to continue the relationship substantially as it existed after the passage of L. 1854, c. 58. Under ordinary circumstances, the attorney-general is not warranted in venturing into the county except upon request, or when there is no county prosecutor, or as otherwise specifically provided by statute. R. S. 52:174.-4(f); N. J. S. 2A :158-4. There is no ordinary chain of command between the attorney-general and the county prosecutors. R. S. 52:17A-5 points up the essential independence of the two offices and the disparateness of their powers. After enumerating the special circumstances under which the attorney-general may attend in a county, R. S. 52:17A-5 provides:
“* * * the Attorney-General and bis deputies or assistants shall have all the power and authority of the county prosecutor for *370prosecuting the criminal business of the State or such part thereof, including the investigation of alleged crimes and misdemeanors * * *.
Whenever the Attorney-General shall have taken over the duties of a county prosecutor, he shall have all of the authority conferred by law upon the prosecutor, and he may appoint such temporary assistants as he may deem necessary, and shall also have power to appoint such aids, investigators or other personnel and clerical assistants as he shall deem necessary.”
In summary, although at common law the attorney-general did in fact possess broad powers over criminal matters, his powers and duties were, and are now, seemingly subject to definition by the Legislature. Such being the case, the Legislature has seen fit to work a pronounced deviation of authority within the executive structure, investing the county prosecutors with a jurisdiction formerly occupied by the attorney-general and largely excluding the latter from conducting criminal business within the various counties. The prosecutor is normally entitled to prosecute the criminal affairs of the State within the county, and without intervention by the attorney-general. N. J. S. 2A :158-4. As between the two officers, the prosecutor is usually entrusted with the primal duties of detection, arrest and conviction. N. J. S. 2A :158 — 5. Of course, in reality, there is a close and healthy coordination which should always exist between the two offices.
The potential amplitude of the attorney-general’s authority under R. S. 52:17A-4(7i), which imposes the duty upon him to “[e]nforce the provisions of the Constitution and all other laws of the State, as well as perform all of the duties conferred and imposed by law * * *,” remains open for delineation if the occasion should arise, and we do not treat of it here in a definitive manner. In light of the specific provisions of the enactments previously discussed, it is doubtful whether the general phraseology of R. S. 52:17A-4(h) imports a close supervisory relationship between the attorney-general and the county prosecutors. In passing, we note that R. S. 52:17A-1 describes one of the purposes of the Department of Law Act as being “to *371provide for the enforcement of the criminal law of the State by such department where the ends of justice so require,” and undoubtedly this provision will have to be taken into consideration if an interpretation of R. S. 52:17 A-á(h) is ultimately made. Both of these sections are commented upon by Professor Ferguson in "Formulation of Enforcement Policy,” 11 Rutg. L. R. 507, 521 (Spring 1957).
Neither does it appear that the Governor is responsible for the daily functioning of the prosecutor’s office. By virtue of the provisions of Art. V, Sec. IV, par. 5, of the Constitution of 1947, the Governor has removal powers over those employees who receive their compensation from the State, but the prosecutors receive their remuneration from the county.
The Constitution provides “the executive power shall be vested in a Governor” and he “shall take care that the laws be faithfully executed.” Art. V, Sec. I, pars. 1 and 11. The means for insuring faithful execution, however, is:
“* * * appropriate action or proceeding in the courts brought in the name of the State, to enforce compliance with any constitutional or legislative mandate, or to restrain violation of any constitutional or legislative power or duty, by any officer, department or agency of the State * *
Undoubtedly, in a practical sense, the Governor enjoys a very real authority over the county prosecutors through his powers to supersede them in particular cases. To this extent, at least, the prosecutor’s office is not completely divorced from control by the state executive. But the existence of this power of supersession does not bring the prosecutors so' directly under the influence of the Governor that they automatically qualify as full-fledged members of the state executive branch.
We are satisfied that the prohibition of Article III of the Constitution of 1947 does not invalidate the Committee’s demand for documentary evidence of the identity of those persons or agencies engaging in wiretapping on behalf of the prosecutor. This article provides:
*372“The powers of the government shall be divided among three distinct branches, the legislative, executive, and judicial. No person or persons belonging to or constituting one branch shall exercise any of the powers properly belonging to either of the others, except as expressly provided in this Constitution.”
The essence of the doctrine of separation was described in Massett Bldg. Co. v. Bennett, 4 N. J. 53, 57 (1950), by Chief Justice Vanderbilt, where he said:
“As we observed in Mulhearn v. Federal Shipbuilding & Dry Dock Co., 2 N. J. 356, 363 (1949), the doctrine of separation of powers is not peculiar to New Jersey; it exists in one form or another in almost every American constitution; and it has nowhere been construed as creating three mutually exclusive water-tight compartments. To do so would render government unworkable and the slave of a doctrine that has for its beneficial purpose the prevention of despotism that inevitably results from the concentration of all the powers of government in one person or in one organ of government. So in almost every state we find seeming exceptions to the doctrine from the earliest times to the present day, Baldwin, The American Judiciary, Chapter II (1914), some of which are upheld, others of which have been declared unconstitutional. While no rule of thumb will cover all the cases, in general it may be said that no deviation from the constitutional provisions incorporating the doctrine of the separation of powers will be tolerated which impairs the essential integrity of one of the great branches of government.”
Here, we have no impairment of the “essential integrity of one of the great branches of government.” In truth, we encounter much difficulty in defining with complete exactitude the legal status of the prosecutor in our governmental scheme. But although there is confusion and uncertainty with regard to his status by reason of the fact that his office is created by the Constitution, he is appointed by the Governor with the advice and consent of the Senate, the Legislature prescribes his duties, while he is paid by the county, plus the fact that the freeholders and the assignment judge of the county have general powers of supersedure, there is nevertheless little doubt but that the executive chain of command is not sufficiently prominent to enable the prosecutor to claim any high prerogative which might be enjoyed by the state executive with respect to *373withholding information from the Legislature. In fact, the Attorney-General concedes that if the prosecutor is to assert any constitutional right to withhold records or information from the Committee, it must be on the basis of his own unique status and not as a result of any immediate connection with the Governor or Attorney-General.
The prosecutor is primarily a local official. There is no equality in stature or dignity with the Legislature. He cannot claim freedom from properly conducted legislative investigation on the ground that such will subvert the division of powers envisioned by our forefathers as an effective check upon the growth of despotism. The doctrine of separation has little applicability where the competing governmental functions are on entirely different levels of government.
Additionally, the Committee is not basically seeking to exercise any power “properly belonging” to another branch of government. See Tenney v. Brandhove, supra, 341 U. S., at page 378, 71 S. Ct., at page 789. The broad scope of legislative investigatory powers has already been outlined. The fact that the Legislature may unearth particular crimes and disclose the activities of specific individuals in its pursuit of the facts necessary to wise and effective legislation is immaterial and purely incidental. See Sinclair v. United States, supra, 279 U. S., at page 295, 49 S. Ct., at page 272; McGrain v. Daugherty, supra, 273 U. S., at pages 179-180, 47 S. Ct., at page 330. Presumably, the purpose of the Committee is to discover whether its previous legislation against wiretapping is working effectively and whether new legislation of a different character is needed or advisable. The revelation of the identities of those performing wiretapping may well be material to the expedient accomplishment of this purpose. Only by this avenue can the Committee ascertain how widespread and flourishing the practice is. It may possibly develop that some of the persons hired by the prosecutor operate large agencies with much equipment used in making thousands of taps a year. Speculative as this assumption is, it nevertheless reflects the relevance *374and importance of the information which the Committee demands.
In this connection, the words of Justice Jacobs in Eggers v. Kenny, 15 N. J. 107, 119-120 (1954), are especially apt:
“Since then the many pertinent decisions which have been rendered throughout the country have recognized that if the legislative and executive branches of government are to discharge their obligation of meeting fully the threat of widespread crime they must be furnished with adequate information on the subject; it is when they know of existing conditions including the nature of the violations and the extent of official participation therein that they can best determine what legislative and executive steps should be taken for the protection of the public.
* * * This case, as well as the pertinent holding in the, second Hague case, must now be overruled in order that our State may have the important public benefits of the doctrine that a legislative body may conduct an inquiry in aid of its proper legislative functions even though the subject of the inquiry may also be the proper concern of courts and grand juries in their enforcement of the criminal laws. This doctrine has received almost universal recognition and is applicable equally to state investigating committees and municipal investigating committees acting pursuant to express or implied statutory authority.”
As modified to require the disclosure to the Committee of the identities of those outside persons or agencies who performed wiretapping operations for the prosecutor, the judgment below is affirmed, without costs.