But if suggestion is useful in treating moral complaints and physical ailments, may it not render still greater services to society, in turning into honest folks the wretched children who people our reformatories and who only leave them to enter the army of crime. Let no one tell me it is impossible. The remedy exists and I can prove it. I will quote the two following cases which are very characteristic, but here I must insert a few remarks in parenthesis. To make you understand the way in which suggestion acts in the treatment of moral taints I will use the following comparison. Suppose our brain is a plank in which are driven nails which represent the ideas, habits, and instincts, which determine our actions. If we find that there exists in a subject a bad idea, a bad habit, a bad instinct,--as it were, a bad nail, we take another which is the good idea, habit, or instinct, place it on top of the bad one and give a tap with a hammer--in other words we make a suggestion. The new nail will be driven in perhaps a fraction of an inch, while the old one will come out to the same extent. At each fresh blow with the hammer, that is to say at each fresh suggestion, the one will be driven in a fraction further and the other will be driven out the same amount, until, after a certain number of blows, the old nail will come out completely and be replaced by the new one. When this substitution has been made, the individual obeys it. Let us return to our examples. Little M----, a child of eleven living at Troyes, was subject night and day to certain accidents inherent to early infancy. He was also a kleptomaniac, and, of course, untruthful into the bargain. At his mother's request I treated him by suggestion. After the first visit the accidents ceased by day, but continued at night. Little by little they became less frequent, and finally, a few months afterwards, the child was completely cured. In the same period his thieving propensities lessened, and in six months they had entirely ceased. This child's brother, aged eighteen, had conceived a violent hatred against another of his brothers. Every time that he had taken a little too much wine, he felt impelled to draw a knife and stab his brother. He felt that one day or other he would end by doing so, and he knew at the same time that having done so he would be inconsolable. I treated him also by suggestion, and the result was marvelous. After the first treatment he was cured. His hatred for his brother had disappeared, and they have since become good friends and got on capitally together. I followed up the case for a long time, and the cure was permanent.