Medicine is all the fashion in these days, and very naturally. It is the amusement of the idle and unemployed, who do not know what to do with their time, and so spend it in taking care of themselves. If by ill-luck they had happened to be born immortal, they would have been the most miserable of men; a life they could not lose would be of no value to them. Such men must have doctors to threaten and flatter them, to give them the only pleasure they can enjoy, the pleasure of not being dead. I will say no more at present as to the uselessness of medicine. My aim is to consider its bearings on morals. Still I cannot refrain from saying that men employ the same sophism about medicine as they do about the search for truth. They assume that the patient is cured and that the seeker after truth finds it. They fail to see that against one life saved by the doctors you must set a hundred slain, and against the value of one truth discovered the errors which creep in with it. The science which instructs and the medicine which heals are no doubt excellent, but the science which misleads us and the medicine which kills us are evil. Teach us to know them apart. That is the real difficulty. If we were content to be ignorant of truth we should not be the dupes of falsehood; if we did not want to be cured in spite of nature, we should not be killed by the doctors. We should do well to steer clear of both, and we should evidently be the gainers. I do not deny that medicine is useful to some men; I assert that it is fatal to mankind. You will tell me, as usual, that the doctors are to blame, that medicine herself is infallible. Well and good, then give us the medicine without the doctor, for when we have both, the blunders of the artist are a hundredfold greater than our hopes from the art. This lying art, invented rather for the ills of the mind than of the body, is useless to both alike; it does less to cure us of our diseases than to fill us with alarm. It does less to ward off death than to make us dread its approach. It exhausts life rather than prolongs it; should it even prolong life it would only be to the prejudice of the race, since it makes us set its precautions before society and our fears before our duties. It is the knowledge of danger that makes us afraid. If we thought ourselves invulnerable we should know no fear. The poet armed Achilles against danger and so robbed him of the merit of courage; on such terms any man would be an Achilles. Would you find a really brave man? Seek him where there are no doctors, where the results of disease are unknown, and where death is little thought of. By nature a man bears pain bravely and dies in peace. It is the doctors with their rules, the philosophers with their precepts, the priests with their exhortations, who debase the heart and make us afraid to die.