Authors:
  • Take the sum of human achievement in action, in science, in art, in literature subtract the work of the men above forty, and while we should miss great treasures, even priceless treasures, we would practically be where we are today ... The effective, moving, vitalizing work of the world is done between the ages of twenty-five and forty.

    Address at Johns Hopkins University, Baltimore, Md., 22 Feb. 1905