Mathematics is not just a collection of abstract concepts, but a language that allows us to understand the universe.

The past is never dead. It's not even past.

The preservation of the means of knowledge among the lowest ranks is of more importance to the public than all the property of all the rich men in the country.

地震是一种自然现象，而不是一种惩罚。

你不能让自己感觉到你感觉不到的东西，但你可以不顾自己的感受去做正确的事情。