True strength comes from vulnerability and the courage to be yourself.
真正的力量来自于脆弱和做自己的勇气。
Without food, man can live at most but a few weeks; without it, all other components of social justice are meaningless.
真正的自由是内心的自由。
人类是一种糟糕的动物。
"The best way to learn mathematics is to do mathematics."