The only way to learn mathematics is to do mathematics.
你在低谷時做的事情比在好日子時做的更重要。
Great deeds are usually wrought at great risks.
Every thought is a step in the dance of adaptation.
You don't have to burn books to destroy a culture. Just get people to stop reading them.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."