The writer must be a person who is willing to fail.

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.

世界会打击每一个人，但经历过后，许多人会在受伤的地方变得更坚强。

The goal of behavior is always the reduction of some drive or need.

量子世界不仅比我们想象的更奇怪，而且比我们能够想象的还要奇怪。