Moral insanity

A morbid perversion of the feelings, affections, or propensities, but without any illusions or derangement of the intellectual faculties; irresistible impulse or an incapacity to resist the prompting of the passions, though accompanied by the power of discerning the moral or immoral character of the act. Moral insanity is not admitted as a bar to civil or criminal responsibility for the patient's acts, unless there is also shown to be intellectual disturbance, as manifested by insane delusions or the other recognized criteria of legal insanity.

Leache v. State, 22 Tex. App. 279, 3 S. W. 539, 58 Am. Rep. 638; In re Forman's Will, 54 Barb. (N. Y.) 291; State v. Leehman, 2 S. D. 171, 49 N. W. 3.

The term "emotional insanity" or mania transitoria applies to the case of one in the possession of his ordinary reasoning faculties who allows his passions to convert him into a temporary maniac.

Mutual L. Ins. Co. v. Terry, 15 Wall. 580 , 583, 21 In Ed. 236,