Give me a pupil who has no need of these, or I will have nothing to do with him. No one else shall spoil my work, I will educate him myself or not at all. That wise man, Locke, who had devoted part of his life to the study of medicine, advises us to give no drugs to the child, whether as a precaution, or on account of slight ailments. I will go farther, and will declare that, as I never call in a doctor for myself, I will never send for one for Emile, unless his life is clearly in danger, when the doctor can but kill him. I know the doctor will make capital out of my delay. If the child dies, he was called in too late; if he recovers, it is his doing. So be it; let the doctor boast, but do not call him in except in extremity. As the child does not know how to be cured, he knows how to be ill. The one art takes the place of the other and is often more successful; it is the art of nature. When a beast is ill, it keeps quiet and suffers in silence; but we see fewer sickly animals than sick men. How many men have been slain by impatience, fear, anxiety, and above all by medicine, men whom disease would have spared, and time alone have cured. I shall be told that animals, who live according to nature, are less liable to disease than ourselves. Well, that way of living is just what I mean to teach my pupil; he should profit by it in the same way. Hygiene is the only useful part of medicine, and hygiene is rather a virtue than a science. Temperance and industry are man's true remedies; work sharpens his appetite and temperance teaches him to control it. To learn what system is most beneficial you have only to study those races remarkable for health, strength, and length of days. If common observation shows us that medicine neither increases health nor prolongs life, it follows that this useless art is worse than useless, since it wastes time, men, and things on what is pure loss. Not only must we deduct the time spent, not in using life, but preserving it, but if this time is spent in tormenting ourselves it is worse than wasted, it is so much to the bad, and to reckon fairly a corresponding share must be deducted from what remains to us. A man who lives ten years for himself and others without the help of doctors lives more for himself and others than one who spends thirty years as their victim. I have tried both, so I think I have a better right than most to draw my own conclusions.