If your process harms the environment, you're not tanning—you're taking.

我们对显而易见的事物视而不见，而且对自己的视而不见也视而不见。

The only real failure in life is not trying.

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

你完成得越多，你想要完成的就越多。

知识最大的敌人不是无知，而是知识的幻觉。

这个世界惟有两样东西让我们的心灵感到深深的震撼，一是我们头顶上灿烂的星空,一是我们内心崇高的道德法则。

社会的幸福是政府的最终目的。