学习数学的唯一方法就是做数学。

The greatest art is noisy with ideas.

If you double the number of experiments you do per year, you're going to double your inventiveness.

The hardest part of any challenge is taking the first step.

你无法回到过去改变开头，但你可以从现在开始改变结局。

Chaos isn't a pit. Chaos is a ladder. 

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.