Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

思维就是行为。在显性言语中习得的肌肉习惯是隐性或内部言语（思维）的原因。

Sustainability is not just a trend, it's a responsibility we owe to future generations.

沉默是灵魂的语言。

无论失败多么艰难，只要你不停下尝试，失败就不是终点。