写作的行为是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。

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.

I didn't think I was ever going to get a sensible question.

感谢歌迷一直以来的支持，没有你们就没有今天的我。