"You can't go back and change the beginning, but you can start where you are and change the ending."
你无法回到过去改变开头，但可以从现在开始改变结局。
Failure is interesting—it’s part of making progress. You never learn from success, but you do learn from failure.
The true power of mathematics lies in its ability to reveal hidden patterns and structures in the chaos of the universe.
积极心理学不是忽视消极面，而是建立积极面
真理是存在的无蔽。
老年人相信一切，中年人怀疑一切，年轻人知道一切。