The history of philosophy is not, like the history of the sciences, to be considered as a mere chronological record of discoveries and errors. It is the history of the human spirit in its endeavor to understand itself and its relation to the universe.

在数学中，发现的旅程往往比目的地本身更有价值。

世界会打击每一个人，但经历过后，许多人会在受伤的地方变得更坚强。

制度是一个社会的游戏规则，或者更正式地说，是人为设计的约束人类互动的框架。