"The best way to learn is to do it, to make mistakes, and to learn from them."

Mathematics is the language in which the universe writes its deepest secrets.

静默时就能思考，说话时就能教导人，有符合道义的行为就能成就事业，如果这三者交替运用，就能成为圣人。

最好的投资是投资于自己的事业。

Purposive behavior in animals and men.