Don't stop when you're tired. Stop when you're done.
It is best to act with confidence, no matter how little right you have to it.
Nature is written in mathematical language.
书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。
Wherever we are, what we hear is mostly noise. When we ignore it, it disturbs us. When we listen to it, we find it fascinating.
"世界是一座监狱，而语言是钥匙。"
Man is an animal that makes bargains: no other animal does this—no dog exchanges bones with another.
人是会讨价还价的动物：没有其他动物会这样做——没有狗会与另一只狗交换骨头。
真正的对手，包围的敌人，不是俄罗斯人，而是他们自己的愚蠢。