法律体系的存在是一个事实问题，而不是道德问题。

大自然从不欺骗我们；欺骗我们的总是我们自己。

自然界的普遍法则大多不是直接感知的对象。

The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

要想成功，你必须愿意失败。

Don’t treat people as bad as they are. Treat them as good as you are.

Do what you love, and the money will follow.

化学是一门奇妙的科学，但一个人不应该完全投身于其中。