如果你想在数学上取得进步，你必须习惯于不舒服。

对生命的研究就是对无限可能性的研究。

Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws.

眼睛不能同时看清楚两样东西，耳朵不能同时听清楚两种声音。

A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else. Men’s happiness or misery is most part of their own making. He, whose mind directs not wisely, will never take the right way; and he, whose body is crazy and feeble, will never be able to advance in it.