There is no doubt that in exchanging a self-centered for a selfless life we gain enormously in self-esteem. The vanity of the selfless, even those who practice utmost humility, is boundless.

You can't have the good without the bad. So I just take the bad with the good and move on.

Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

一切都有价值，只要灵魂不渺小。

教师必须既是学生的研究者，也是学科的研究者。