你是自己人生的艺术家，不要把画笔交给别人。

我们不是通过经验学习，而是通过对经验的反思学习。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.

"To be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others."