一切人类知识都源于经验。

I have a dream that one day this nation will rise up and live out the true meaning of its creed.

——1963年6月25日在西德市政厅柏林墙前的演说

生命太短暂，不要把时间浪费在无关紧要的事情上。

The actions of men are the best interpreters of their thoughts.

永远不要停止学习。当你认为自己无所不知的那一刻，就是你停止成长的那一刻。

I believe in second chances because I know what it's like to mess up.

When I accept myself just as I am, then I can change.