The first man who， having enclosed a piece of ground， bethought himself of saying 'This is mine，' and found people simple enough to believe him， was the real founder of civil society.

每一个数学问题都是通向更深入理解世界的窗口。

Innovation thrives in an environment of open-mindedness.

The more you love yourself, the less nonsense you'll tolerate.

人生苦短，必须快乐。