你人生的热情应该恰到好处；但你的人生目标应该超越自己。为那些远比你更宏大的东西而工作。

The people who get on in this world are the people who get up and look for circumstances they want, and if they cannot find them, make them.

有时最深刻的数学来自于玩弄简单的想法，直到它们展现出隐藏的复杂性。