Ashton Eaton

You see somebody on a football field make a great, athletic 70-yard run, but the athleticism is immeasurable. It's undoubtedly athletic, but compared to somebody else who did something else, how do you compare it? That's the great part of track and field. It's a test, but with results that you can compare to others.

If a man made himself an expert in any particular branch of human activity, there would result the strong tendency that a peculiar aptitude towards the same branch would be found among some of his descendants.