与我们内心的东西相比，我们身后和面前的东西都是微不足道的。

有机化学现在足以让人发疯。它给我一种原始热带森林的印象，充满了最非凡的事物，一个可怕的、无尽的丛林，人们不敢进入，因为似乎没有出路。

No individual has any right to come into the world and go out of it without leaving behind him distinct and legitimate reasons for having passed through it.

唯一真正的监狱是你为自己建造的那个。