做数学就是同时参与创造和发现的行为。

凡事都有困难应考虑周详，行动上要顾虑缺失，想一想自己的行为，都有许多差错。

People who decry the fact that businesses are in business "just to make money" seldom understand the implications of what they are saying. You make money by doing what other people want, not what you want.

Your body is a battleground.

每一个他者都是完全的他者。