科学不仅是理性的门徒，也是浪漫和激情的追随者。

Contentment is natural wealth，luxury is artificial poverty.

人生苦短，必须快乐。

That man, I think, has had a liberal education who has been so trained in youth that his body is the ready servant of his will.  

"The past is never dead. It's not even past."

幸福不是现成的东西，它来自于你自己的行动。

外在世界只是内在世界的反映。