The reasonable man adapts himself to the world; the unreasonable one persists to adapt the world to himself. Therefore all progress depends on the unreasonable man.
Beavers build houses; but they build them in nowise differently, or better now, than they did, five thousand years ago. Ants, and honey-bees, provide food for winter; but just in the same way they did, when Solomon referred the sluggard to them as patterns of prudence. Man is not the only animal who labors; but he is the only one who improves his workmanship.