Man has a large capacity for effort. But it is so much greater than we think it is, that few ever reach this capacity. We should value the faculty of knowing what we ought to do and having the will to do it. Knowing is easy. It is the doing that is difficult. The critical issue is not what we know but what we do with what we know. I believe it is the duty of each of us to act as if the fate of the world depended on him.

Quote is from Admiral Rickover a few decades ago. A… See more