When I was a boy, we used shamelessly to print books in big type, indorsed “For the Aged,” on the theory that everyone must be nearly blind at maturity. Even now Dr. George F. Stevens thinks that everyone “ought” to wear glasses after forty, notwithstanding that many Christian Scientists and Mental Scientists discard them long after that age. There is as much truth as wit in the saying that “A man is as old as he feels, a woman as old as she says she is.” We used to insist upon every year being counted and noted, too, in dress, occupation, and general demeanor. But we have changed all this—even natty dress now common to older people shows it—but the change has come about slowly, and there are still many who think that people of sixty should give up all active life and prepare to “grow old gracefully,” that is, to drop willingly into senility. Those who are willing so to slip into uselessness quietly, need much sleep; but even for them the sleep is not a waste of time, but an aid to length of days. There has been a great deal too much willingness to let go of active life, because of the idea that “threescore years and ten” was the natural limit of man’s life, and that to live beyond seventy-five was to live upon “borrowed time.” There is a sort of tickle for the mental palate in that expression “borrowed time,” but there is no substance in it, if we will but examine it. How can there be “borrowed” time and from whom is it borrowed? Life is not a thing that begins to-day and ends to-morrow. So far as we know, it has neither beginning nor end. It is beyond our power to picture a limit to all life. Well, if life has neither beginning nor end, if it has no limits, and if time is merely the unit by which we measure seasons, why should there be a limit to what we can use of it, and how could a continued use of it be called “borrowing”? In the earlier days of the race, when all progress was made through might, and war settled every question, when a man’s “work” meant chasing over the hills, when men fared hard, and knew little of Nature; when fear was the supreme emotion—it is probable that seventy years represented a long life. To escape all the chances of death from accident and ignorance for so long a time was an achievement, and, in this way, doubtless, seventy years came to be regarded as the natural period of man’s physical existence.