delivered the opinion of the court.
There are but two questions presented here that are deemed necessary to be considered in the decision of this case. The first relates to the action of the Criminal Court in refusing to grant a continuance, and the second regards the instructions as to insanity.
As a general proposition, the granting of a continuance is a matter resting in the sound discretion of the court where the trial is had, and its ruling will not be revised or interfered with except in cases where manifest injustice has resulted.
The record should show clearly that the defendant has been affected injuriously by being deprived of the evidence which he would have obtained by further continuing the cause.
In looking into the affidavits made by the defendant, it is very apparent, when taken in connection with the medical testimony adduced on the trial, that the evidence he expected to get from Europe was important in his defense. That it would have produced a different verdict is not certain, as no one can know what weight a jury would have attached to it; but it had a tendency to support the issue he tendered, and ho was entitled to the benefit of it. No laches was attributable to him, for he seems to have used all the diligence he was capable of; and, considering the short time that intervened between his arraignment and his being put upon trial, it was scarcely to be expected that he could have obtained the desired testimony. Under all the circumstances, it seems to me that it would have better comported with the humanity of the law to have sustained the application and given the defendant another continuance.
The only defense set up by the accused was insanity; and it is *131urged by his counsel that the court committed error in its instructions on that question. It would subserve no useful purpose to go into a labored or lengthy review of the authorities on that subject, as they will be found diverse and irreconcilable. Recent researches in medical science have eliminated rules, going very far to mitigate the doctrines laid down by the old authors. It may be said that it is now universally conceded that insanity is a disease of the brain — of that mass of matter through and by which the powers of the mind act. There are different kinds of insanity, and different degrees of the same kind, and it has been found exceedingly difficult'to furnish any sure test for the guidance of courts and juries.
The question of insanity is always one of fact; but how much proof shall be required, and where the onus ends, is involved in perplexity. The defense may be made out by circumstances; but every man is presumed to be sane, and to possess a sufficient degree of reason to be responsible for his crimes, until the contrary is shown; and to establish the defense it must be proved that at the time of committing the offense he was laboring under such a defect of reason, from disease of the mind, as not to know the nature and quality of the act he was doing, or, if he did know it, such as not to know that he was doing wrong.
The instruction mainly complained of is the following : “ The law presumes that every man is sane until tbe contrary is established by the evidence to' the satisfaction of the jury; and when insanity in any form is set up as a defense, it is a fact which must be proved like any fact. The burden of proving such insanity is upon the defendant, and he is not entitled to the benefit of a mere doubt whether he was or was not insane.”
■ It is now insisted that if the evidence was sufficient to raise a mere doubt in the minds of a jury concerning the defendant’s sanity, that doubt inured to his benefit, and would have authorized his acquittal, and that the court should have so directed.
The instruction given is in entire consonance with the previous decisions of this court, and has been considered the established law of this State for many years.
In The State v. Huting, 21 Mo. 464, it was declared in explicit *132terms that a party charged with murder, who admits the. killing and relies upon the defense of insanity, must make it out to the satisfaction of. the jury, and that he is not entitled to the benefit of a reasonable doubt as to his sanity. The subject was not much considered, but the rule was announced as one considered well settled. In the case of The State v. McCoy, 34 Mo. 531, the same question was again presented, and the ruling in Huting’s case reaffirmed. But there are some recent cases in which the doctrine contended for by the appellant receives strong support. (The People v. McCann, 16 N. Y. 58; Hopps v. People, 31 Ill. 385; State v. Bartlett, 43 N. H. 224.) In Hopps v. People, supra, it was held by a majority of the court that it was not necessary that the 'insanity of the accused should be established by even a preponderance of proof; but if, upon the whole evidence, the jury entertain a reasonable doubt of his sanity, they should acquit. Bartlett’s case, in 43 New Hampshire, is to the same effect. In the former of these cases, Judge Breese took the strong position that the burden of proof was on the government throughout. I should be very reluctant to give this proposition my unqualified assent.
Both observation and experience show that insanity is easily simulated; and if a bare doubt, which may be created in the minds of a jury by slight circumstances, is permitted to control and produce an acquittal, the guilty will often go unpunished, and the interests of society suffer great injury. Mr. Bishop, a writer of great accuracy on criminal law, remarks : “ Sanity, as observed by a learned judge, is presumed to be the normal state of the human mind, and it is never incumbent on a prosecutor to give affirmative evidence that such state exists in a particular case. But, suppose this normal state is denied to have existed in the particular instance, then, if evidence is produced in support of such denial, the jury must judge of it and its effect on the main issue of guilty or not guilty; and if, considering all the evidence, and considering the presumption that what a man does is sanely done, and suffering the evidence and the presumption to work together in their minds, they entertain a reasonable doubt whether the prisoner did the act in a sane state of mind, they *133are to acquit, otherwise they are to convict.” (1 Bish. Crim. Proc. § 534.)
I think that the safest and most reasonable rule is that, as the law presumes every person who has reached the age of discretion to be of sufficient capacity to be responsible for crimes, the burden of establishing the insanity of the accused affirmatively to the I satisfaction of the jury, on the trial of a criminal case, rests t upon the defense. It is not necessary, however, that this defense * be established beyond a reasonable doubt; it is sufficient if the jury is reasonably satisfied, by the weight or preponderance of the evidence, that the accused was insane at the time of the commission of the act. (Loeffner v. State, 10 Ohio St. 598 ; Fisher v. People, 23 Ill. 283; Commonwealth v. Rogers, 7 Met. 500 ; Commonwealth v. Eddy, 7 Gray, 583.)
The judgment will be reversed and the cause remanded.
The other judges concur.