Many of the physical wrecks we meet, who will probably live from a few months to a few years more, if they continue in the old way, are in the same boat as Mr. Cornaro was at forty. They have had enough experience to begin to do good work, to be of some benefit to humanity. Instead of living and giving the world their best, they die. The world has had to educate these people, and it is expensive. Instead of living on and doing their work, they leave us when they ought to begin to repay us for what we have done for them. They are quitters. Suppose Andrew Carnegie had died at the time he sold out his steel business. To most people he would have left an unsavory memory, for though we should have considered him successful from the business standpoint, many of us would say that the means were not justified by the end. However, Mr. Carnegie has spent many years since in furthering the cause of the spread of knowledge and in working for universal peace. Perhaps when Carnegie, the man of business, is well nigh forgotten, Carnegie, the educator, will be held in tender and thankful memory. He is now influencing the times for good and this influence will go down the ages. A man has no right to say that he is weary of life and that he wants to die. The race has a claim on him. We learn through our mistakes. The race in general has to pay and suffer for every individual's education. When a man has acquired a measure of wisdom through experience, we have a right to claim it as our own. Many men are wise in their own lines, but they have been so busy attending to the affairs that brought them success that they have omitted to learn how to have health. These people owe it to themselves and to humanity to take enough time to learn how to live so that they can work in health. The better the health the finer their product. Health and efficiency go hand in hand. What is a man to do when he has reached middle age and finds himself degenerating? A man ought to know how to live at forty, but if he does not he should immediately learn. It may be true that "a man is a fool or a physician at forty," yet there is time and if a man lacks wisdom at forty he should immediately acquire some. Such an individual should get the best health adviser possible, avoiding any man who would have him take drugs. What he needs is not medicine, but to learn how to live. I am confident that the careful reader will find enough knowledge in this book to give him the key to the situation. If the sufferer uses narcotics and stimulants, they must be stopped immediately. Even the least harmful of these, such as beer and light wine, should be avoided until good health has been won. These beverages need never be used. If they are taken rarely and in moderation they do no harm.