INSANITY, med. jur. A continued impetuosity of thought, which, for the time being, totally unfits a man for judging and acting in relation to the matter in question, with the composure requisite for the maintenance of the social relations of life. Various other definitions of this state have been given, but perhaps the subject is not susceptible of any satisfactory definition, which shall, with, precision, include all cases of insanity, and exclude all others. Ray, Med. Jur. Sec. 24, p. 50.
1. A chronic disease, manifested by deviations from the healthy and natural state of the mind, such deviations consisting in a morbid perversion of the feelings, affections and habits. 2. Disturbances of the intellectual faculties, under the influence of which the understanding becomes susceptible of hallucinations or erroneous impressions of a particular kind. 3. A state of mental incoherence or constant hurry and confusion of thought.