This important difference in the police point of view is of no great importance in the psychological point of view nor in the medical point of view, for the danger created by the patient is extremely varied. It is impossible to say that such or such a disorder defined by medicine leaves always the patient inoffensive and that such another always renders him dangerous. There are melancholies, general paralytics, insane who are inoffensive, and whom one should not call lunatics; there are impulsive psychasthenics who are dangerous and whom one shall have to call lunatics. The danger created by a patient depends a great deal more upon the social circumstances in which he lives than upon the nature of his psychological disorders. If he is rich, if he has no need to earn his living, if he is surrounded by devoted watchfulness, if he lives in the country, if his surroundings are simple, the very serious mental disorders he may have do not constitute a danger. If he is poor, if he has to earn his living, if he lives alone in a large town and his position is delicate and complex, the same mental disorders, exactly at the same degree, will soon constitute a danger, and the physician will be forced to place him in an asylum with a good certificate. This is a practical distinction, necessary for order in towns, which has no importance in the point of view of medical science.[15] If we put these accidental and slightly important differences on one side, we certainly see a common ground in neuroses and psychoses. The question is always an alteration in the conduct, and, above all, in the social conduct, an alteration which tends, if I am not mistaken, toward the same part of the conduct.