Without fullness of experience, length of days is nothing. When fullness of life has been achieved, shortness of days is nothing. That is perhaps why the young have usually so little fear of death; they live by intensities that the elderly have forgotten.
The test of maturity, for nations as well as individuals, is not the increase of power, but in the increase of self, self, self direction, and self transcendence. For in a mature society, man himself and not his machines or his organizations is the chief work of art.