The born criminal is an epileptic, not however afflicted with the common form of this disease, but with a special kind. The pathological basis, the etiology, and the anatomical and psychological characteristics are identical, but there are many differences. While in the ordinary form motor anomalies are very common, in the criminal form they are very rare, while in ordinary epilepsy the mental explosions are accompanied by unconsciousness, in the other form they are weakened and spread over the whole existence, and consciousness is, relatively speaking, preserved; and while, finally, the ordinary epileptic has not always the tendency to do evil for its own sake--nay, may even achieve holiness--in the hidden form the bent towards evil endures from birth to death. The perversity concentrated in one second in the motor attack, is attenuated in the second form, but spread over the whole existence. We have therefore an epilepsy _sui generis_, a variety of epilepsy which may be called criminal.
Thus the primitive idea of crime has become organic and complete. The criminal is only a diseased person, an epileptic, in whom the cerebral malady, begun in some cases during prenatal existence, or later, in consequence of some infection or cerebral poisoning, produces, together with certain signs of physical degeneration in the skull, face, teeth, and brain, a return to the early brutal egotism natural to primitive races, which manifests itself in homicide, theft, and other crimes.
Epileptic born criminals and the morally insane may be classed as lunatics under certain aspects, but only by the scientific observer and professional psychologist. Outside these two forms, there is an important series of offenders, who are not criminals from birth, but become such at a given moment of their lives, in consequence of an alteration of the brain, which completely upsets their moral nature and makes them unable to discriminate between right and wrong. They are really insane; that is, entirely without responsibility for their actions.
Nearly every class of mental derangement contributes a special form of crime.
_The Idiot_ is prompted by paroxysms of rage to commit murderous attacks on his fellow-creatures. His exaggerated sexual propensities incite him to rape, and his childish delight at the sight of flames, to arson.