我从未见过一只野生动物为自己感到难过。一只小鸟会冻死在树枝上，却从不自怜。
I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself.
保持饥饿，保持愚蠢。
It is a common experience that a problem difficult at night is resolved in the morning after the committee of sleep has worked on it.
值得注意的是，一门始于考虑机会游戏的科学竟然成为了人类知识中最重要的对象。