事实上，我不知道如果没有数学我会做什么。
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.
关于自由市场最重要的一点是，除非双方都受益，否则交易不会发生。
Psychology as the behaviorist views it is a purely objective experimental branch of natural science.
The best scientists are those who remain humble in the face of nature's complexity.