_Impulsiveness._ This is another and almost pathognomonical characteristic of born criminals, and also, as we shall see later on, of epileptics and the morally insane. That which in ordinary individuals is only an eccentric and fugitive suggestion vanishing as soon as it arises, in the case of abnormal subjects is rapidly translated into action, which, although unconscious, is not the less dangerous. A youth of this impulsive type, returning home one evening flushed with wine, met a peasant leading his ass and cried out, "As I have not come to blows with anyone to-day, I must vent my rage on this beast," at the same time drawing his knife and plunging it several times into the poor animal's body (Ladelci, _Il Vino_, Rome, 1868). Pinel describes a morally insane subject, who was in the habit of giving way to his passions, killing any horses that did not please him and thrashing his political opponents. He even went to the length of throwing a lady down a well, because she ventured to contradict him. "The most trifling causes [remarks Tamburini, speaking of Sbro...] that stand in the way of his wishes, provoke a fit of rage in which he appears to lose all self-control, like little children, who in resenting any offence show no sense of proportion. The most trivial reasons for disliking anyone awaken in him an irresistible desire to kill the object of his aversion, and if any new blasphemy rises to his lips, he feels constrained to repeat it." A thief once said to my father: "It is in our very blood. It may be only a pin, but I cannot help taking it, although I am quite ready to give it back to its owner." The pickpocket Bor... confessed that at the age of twelve he had begun to steal in the streets and at school, to the extent of taking things from under his schoolfellows' pillows, and that it was impossible for him to resist stealing, even when his pockets were full. If he had not stolen some article before going to bed, he was unable to sleep, and when midnight struck, he felt obliged to take the first thing that came to his hand, destroying it frequently as soon as he had appropriated it. "To give up stealing," said Deham to Lauvergne, "would be like ceasing to exist. Stealing is a passion that burns like love and when I feel the blood seething in my brain and fingers, I think I should be capable of robbing myself, if that were possible." When sentenced to the galleys, he stole the bands from the masts, nails, and copper plates, and he himself fixed the number of lashes he was to receive after each of these exploits, which did not prevent his recommencing stealing directly afterward (_Les Forçats_, p. 358). Ponticelli once saw a thief, who was dying of consumption, steal an old slipper from his neighbour and hide it under the bedclothes.