My work is not for everyone, and that’s okay.
我的作品不是为所有人准备的，这没关系。
People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them.
As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
复杂很容易，简单却很难。
数学是一门活生生的学科，随着新的思想和发现不断演变。