As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

"The moment you feel like giving up, think about why you held on for so long."

艺术家必须是绝对的影子。

The beauty of physics lies in its ability to explain the simplest phenomena with the most profound theories.

不要用很多词语说一点东西，而要在很少的词语中表达很多。