The most important skill in mathematics is the ability to think clearly.

You just once young but may be immature indefinitely.

对付一个不自由的世界，唯一的方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。

Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma—which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

骄矜自大，独断专行，招祸之源。