每个人都有权拥有自己的观点，但没有人有权在事实上犯错。

悲伤就是知识

法律的存在是一回事；其优劣是另一回事。

We are never as happy or as unhappy as we imagine.

Evolution is not just a theory; it's a fact written in our genes.

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.