自由不是给予的,而是夺取的。
Self-love, then, is a necessary principle of action.
记录就是用来被打破的。
数学中最深刻的思想往往来自最简单的问题。
Never forget what you are, for surely the world will not. Make it your strength. Then it can never be your weakness. Armor yourself in it, and it will never be used to hurt you.