发明家的职责是使他的工作尽可能对公众有用和可及。

真相并不总是美丽的，但它总是必要的。

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.

忠于自己，永远不要让任何人告诉你你做不到某件事。