当悲伤来临的时候，不是单个来的，而是成群结队的。

禁止持有武器的法律。只会解除那些本来就不打算或没有决心要犯罪的人的武装……这样的法律只会让受害者变得更糟，让行凶者更强；它们相当于鼓励而不是阻止凶杀，因为一个没有武装的人更可能被一个武装的人袭击。

"We are all in the gutter, but some of us are looking at the stars."

"The only thing that is constant is change."

Happiness in this world, when it comes, comes incidentally. Make it the objet of pursuit, and it leads us a wild-goose chase, and is never attained. Follow some other object, and very possibly we may find that we have cought happiness without dreaming of it.

The psychologist must avoid all forms of mental chemistry.

我不等待心情。如果你那样做，你将一事无成。你的头脑必须知道它必须开始工作。

Innovation in forestry isn't about replacing nature with technology, but using technology to better understand and work with nature.

The essence of modernity is psychologism, the experiencing and interpretation of the world in terms of the reactions of our inner life and indeed as an inward world.