The only thing to do with good advice is to pass it on. It is never of any use to oneself.
对于忠告，你所能做的，就是把它奉送给别人，忠告从来就不是给自己准备的。
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.
最好的故事是那些挑战我们认知的故事。