The stream of thought flows toward purposeful ends.

It's probably as unlikely that you would nowadays become as rich and famous as Bill Gates, as it was unlikely in the17th century that you would accede to the ranks of the French aristocracy. But the point is, it doesn't feel that way. It's made to feel, by magazines and other media outlets, that if you've got energy, a few bright ideas about technology, a garage -- you, too, could start a major thing.

Psychology is the study of how we navigate existence.

译文：不要掩盖别人的优点，不要随便议论别人的缺点。