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讀書人應當以天下大事為自己的責任，不能僅僅做一個只會鉆研書本的學者。

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 power of literature lies in its ability to transport us to other worlds, to make us see the world through the eyes of others.

心不是一個隱喻。

The unexamined life is not worth living.