So far as the prison physician could foresee, the course of his disease would inevitably reach its fatal termination long before the end of his sentence. In spite of its advance. however, the prisoner himself declared that he would never permit himself to die in prison and have his body face such a fate. His declaration was dismissed by the physician with a shrug and the feeling that after all it would not make very much difference to the man, since he would not be there to see or feel it. When, however, he continued to live, manifestly in the last throes of consumption, for weeks and even months after death seemed inevitable, some attention was paid to his declaration in the matter and the doctors began to give special attention to his case. He lived for many months after the time when, according to all ordinary medical knowledge, it would seem he must surely have died. He actually outlived the end of his sentence, had arrangements made to move him to a house just beyond the prison gate as soon as his sentence had expired, and according to the story, was dead within twenty-four hours after the time he got out of prison and thus assured his Breton soul of the fact that his body would be given, like that of any Christian, to the bosom of mother earth.

But there are other and even more important phases of the prolongation of life by the will that still better illustrates its power. It has often been noted that men who have had extremely busy lives, working long hours every day, often sleeping only a few hours at night, turning from one thing to another and accomplishing so much that it seemed almost impossible that one man could do all they did, have lived very long lives. Men like Alexander Humboldt, for instance, distinguished in science in his younger life, a traveler for many years in that hell-hole of the tropics, the region around Panama and Central America, a great writer whose books deeply influenced his generation in middle age. Prime Minister of Prussia as an older man, lived to be past ninety, though he once confessed that in his forties he often slept but two or three hours a night and sometimes took even that little rest on a sofa instead of a bed. Leo XIII at the end of the nineteenth century was just such another man. Frail of body, elected Pope at sixty-four, it was thought that there would soon be occasion for another election; he did an immense amount of work, assumed successfully the heaviest responsibilities, and outlived the years of Peter in the Papal chair, breaking all the prophecies in that regard and not dying till he was ninety-three.

Many other examples might be cited. Gladstone, always at work, probably the greatest statesman of the nineteenth century in the better sense of that word, was a scholar almost without a peer in the breadth of his scholarly attainments, a most interesting writer on multitudinous topics, keen of interest for everything human and always active, and yet he lived well on into the eighties. Bismarck and Von Moltke, who assumed heavier responsibilities than almost any other men of the nineteenth century, saw their fourscore years pass over them a good while before the end came. Bismarck remarked on his eighty-first birthday that he used to think all the good things of life were confined to the first eighty years of life, but now he knew that there were a great many good things reserved for the second eighty years. I shall never forget sitting beside Thomas Dunn English, the American poet, at a banquet of the Alumni of the University of Pennsylvania, when he repeated this expression for us; at the time he himself was well past eighty. He too had been a busy man and yet rejoiced to be with the younger alumni at the dinner.

My dear old teacher, Virchow, of whom they said when he died that four men died, for he was distinguished not only as a pathologist, which was the great life-work for which he was known, but as an anthropologist, a historian of medicine and a sanitarian, was at seventy-five actively accomplishing the work of two or three men. He died at eighty-one, as the result of a trolley injury, or I could easily imagine him alive even yet. Von Ranke, the great historian of the popes, began a universal history at the age of ninety which was planned to be complete in twelve volumes, one volume a year to be issued. I believe that he lived to finish half a dozen of them. I have some dear friends among the medical profession in America who are in their eighties and nineties, and all of them were extremely busy men in their middle years and always lived intensely active lives. Stephen Smith and Thomas Addis Emmet, John W. Gouley, William Hanna Thompson, not long dead, and S. Weir Mitchell, who lived to be past eighty-five, are typical examples of extremely busy men, yet of extremely long lives.

All of these men had the will power to keep themselves busily at work, and their exercise of that will power, far from wearing them out, actually seemed to enable them to tap reservoirs of energy that might have remained latent in them. The very intensiveness of their will to do seemed to exert an extensive influence over their lives, and so they not only accomplished more but actually lived longer. Hard work, far from exhausting, has just the opposite effect. We often hear of hard work killing people, but as a physician I have carefully looked into a number of these cases and have never found one which satisfied me as representing exhaustion due to hard work. Insidious kidney disease, rheumatic heart disease, the infections of which pneumonia is a typical example, all these have been the causes of death and not hard work, and they may come to any of us. They are just as much accidents as any other of the mischances of life, for it is as dangerous to be run into by a microbe as by a trolley car. Using the will in life to do all the work possible only gives life and gives it more abundantly, and people may rust out, that is be hurt by rest, much sooner than they will wear out.

Here, then, is a wellspring of vitality that checks for a time at least even lethal changes in the body and undoubtedly is one of the most important factors for the prolongation of life. It represents the greatest force for health and power of accomplishment that we have. Unfortunately, in recent years, it has been neglected to a great extent for a number of reasons. One of these has been the discussions as to the freedom of the will and the very common teaching of determinism which seemed to eliminate the will as an independent faculty in life. While this affected only the educated classes who had received the higher education, their example undoubtedly was pervasive and influenced a great many other people. Besides, newspaper and magazine writers emphasized for popular dissemination the ideas as to absence of the freedom of the will which created at least an unfortunate attitude of mind as regards the use of the will at its best and tended to produce the feeling that we are the creatures of circumstances rather than the makers of our destiny in any way, or above all, the rulers of ourselves, including even to a great extent our bodily energies.

Even more significant than this intellectual factor, in sapping will power has been the comfortable living of the modern time with its tendency to eliminate from life everything that required any exercise of the will. The progress which our generation is so prone to boast of concerns mainly this making of people more comfortable than they were before. The luxuries of life of a few centuries ago have now become practically the necessities of life of to-day. We are not asked to stand cold to any extent, we do not have to tire ourselves walking, and bodily labor is reserved for a certain number of people whom we apparently think of as scarcely counting in the scheme of humanity. Making ourselves comfortable has included particularly the removal of nearly all necessity for special exertion, and therefore of any serious exercise of the will. We have saved ourselves the necessity for expending energy, apparently with the idea that thus it would accumulate and be available for higher and better purposes.

The curious thing with regard to animal energy, however, is that it does not accumulate in the body beyond a certain limited extent, and all energy that is manufactured beyond that seems to have a definite tendency to dissipate itself throughout the body, producing discomfort of various kinds instead of doing useful work. The process is very like what is called short-circuiting in electrical machinery, and this enables us to understand how much harm may be done. Making ourselves comfortable, therefore, may in the end have just exactly the opposite effect, and often does. This is not noted at first, and may escape notice entirely unless there is an analysis of the mode of life which is directed particularly to finding out the amount of exertion of will and energy that there is in the daily round of existence.

The will, like so many other faculties of the human organism, grows in power not by resting but by use and exercise. There have been very few calls for serious exercise of the will left in modern life and so it is no wonder that it has dwindled in power. As a consequence, a good deal of the significance of the will in life has been lost sight of. This is unfortunate, for the will can enable us to tap sources of energy that might otherwise remain concealed from us. Professor William James particularly called attention to the fact, in his well-known essay on "The Energies of Men", that very few people live up to their maximum of accomplishment or their optimum of conduct, and that indeed "as a rule men habitually use only a small part of the powers which they actually possess and which they might use under appropriate conditions."

It is with the idea of pointing out how much the will can accomplish in changing things for the better that this volume is written. Professor James quoted with approval Prince Pueckler-Muskau's expression, "I find something very satisfactory in the thought that man has the power of framing such props and weapons out of the most trivial materials, indeed out of nothing, merely by the force of his will, which thereby truly deserves the name of omnipotent."¹

It is this power, thus daringly called omnipotent, that men have not been using to the best advantage to maintain health and even to help in the cure of disease, which needs to be recalled emphatically to attention. The war has shown us in the persons of our young soldiers that the human will has not lost a single bit of its pristine power to enable men to accomplish what might almost have seemed impossible. One of the heritages from the war should be the continuance of that fine use of the will which military discipline and war's demands so well brought into play. Men can do and stand ever so much more than they realize, and in the very doing and standing find a satisfaction that surpasses all the softer pleasant feelings that come from mere comfort and lack of necessity for physical and psychical exertion. Their exercise of tolerance and their strenuous exertion, instead of exhausting, only makes them more capable and adds to instead of detracting from their powers.

How much this discipline and training of the will meant for our young American soldiers, some of whom were raised in the lap of luxury and almost without the necessity of ever having had to do or stand hard things previously in their lives, is very well illustrated by a letter quoted by Miss Agnes Repplier in the Century  for December. It is by no means unique or even exceptional. There were literally thousands of such letters written by young officers similarly circumstanced, and it is only because it is typical and characteristic of the spirit of all of these young men that I quote it here. Miss Repplier says that it came from "a young American lieutenant for whom the world had been from infancy a perilously pleasant place." He wrote home in the early spring of 1918:

"It has rained and rained and rained. I am as much at home in a mud puddle as any frog in France, and I have clean forgotten what a dry bed is like. But I am as fit as a fiddle and as hard as nails. I can eat scrap iron and sleep standing. Aren't there things called umbrellas, which you pampered civilians carry about in showers?" If we can secure the continuance of this will exertion, life will be ever so much heartier and healthier and happier than it was before, so that the war shall have its compensations.