Most people desire to remain on earth long and they can have their wish. They can advance in years healthy in body and with growing serenity of mind. Physical and mental well-being are necessary to attain one's life's expectancy. Old age should not be considered as apart from the rest of life. It is but one of the natural phases. Those who do not live to be old have failed to live completely. Those who express their desire to die young generally change their mind when they face death. Man clings to life. Old age is a desirable condition. The physical tempests have been subdued, if the life has been well spent. On the other hand, the faults and foibles of the self-indulgent are accentuated and in such cases old age is a misfortune. No one knows what man's natural length of life is. Anatomists and physiologists compare the human body with the bodies of various animals. In this they are justified, for we all develop according to the same laws. Most of the animals, when allowed to live as nature intended them to live, reach an age of from five to six times the length of the period of their growth. Human beings, with their ability to control their environment, should be able to do even better than that. Man reaches physical maturity between twenty and twenty-five years of age. This would make his natural age one hundred and twenty-five to one hundred and fifty years. There are cases on record that have lived longer and it may be that if man would cease going in the way of self-destruction and spend more thought and time on the welfare of the race, life would be prolonged beyond even one hundred and fifty years. R. T. Trall, M. D., thought that man should live to be two hundred years old. "What man has done man can do." If long life is worth while, doubtless a time will come when long life will be enjoyed. The worry, fretting and foolish haste of today will doubtless be partly done away with some time. Then men and women will have time to live, instead of merely existing, as most people do today. Men have lived long and found life good. Long life for its own sake is perhaps not to be desired, but the benefit that can be bestowed upon the race by those advanced in years is desirable. Occasionally a brilliant individual appears on the scene, doing superior work in life's morning, but most of the work that has been found worthy of the consideration of the ages has been done by men of mature years. Galen, the famous physician, is said to have lived to a great age. It is hard to tell exactly how old he was, but he was probably well past the century mark at his death. His long life gave him time to do work that is appreciated after the lapse of eighteen centuries. For many hundred years after his death he dominated the practice of medicine and he is today spoken of as often as any living medical man.