君子做学问，目的是为了明白道理，拯救社会。

Vices are sometimes only virtues carried to excess!

Mathematics is the art of giving the same name to different things.

The laws of physics are the same in every corner of the universe, a testament to the unity and coherence of the cosmos.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

释义：人如果没有喜事，精神就会萎靡不振；当运气不好、处境艰难时，往往会感到更加落寞和失落。