The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

绘画的行为是一种解放的行为。

The goal of behavior is always the reduction of some drive or need.

The most expensive thing in the world is trust. It can take years to earn and just a matter of seconds to lose.

在商业中，如果你不前进，你就在落后。