"Every word we write is a step towards understanding ourselves and the world around us."
如果你年轻时没有学会思考，那就永远学不会思考。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
历史学家的首要职责是如实讲述他所见的真相，无论这会取悦还是触怒何人。
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.