The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
富贵不能淫,贫贱不能移。越是富贵,越是不能骄傲;越是贫穷,越要坚守志向。虽然尊敬贤能的人,但也不能贬斥那些愚笨不肖的人。
The measure of a good book is whether it makes you think, feel, and see the world differently.
Exile is not a place, it's a condition.
The most profound ideas in mathematics often arise from the simplest observations.