变化是必然的。和平之后是动荡；恶人的离去之后是他们的回归。

每一个数学问题都是通向新理解世界的窗口。

成功是一系列小胜利的积累。

所以大国攻打小国，那是互相残害，大国的错误必然反过来使其本国受害。 

The human being cannot live in a condition of emptiness for very long: if he is not growing toward something, he does not merely stagnate; the pent-up potentialities turn into morbidity and despair, and eventually into destructive activities.

Noman giveth to himself that liberty， to take from himself his life， or any part thereof.