我有一条陪伴我一生的黑犬。胸中的阴郁、内心的折磨就像伺机发起进攻的黑狗一样，一有机会就咬住心口不放。

合作是解决复杂问题的关键。

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.

The first draft of anything is shit.

Most people are afraid of change，but if you look at it as something you can count on，then it can be a comfort.There's not many things you can really count on.