没有艺术；没有文学；没有社会；最糟糕的是，持续的恐惧和暴死的危险；人类的生活是孤独的、贫穷的、肮脏的、野蛮的和短暂的。
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
华为一新员工，刚到华为时，就公司的经营战略问题，写了一封“万言书”给任正非，任正非批复
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
The first love is only a little foolishness and a lot of curiosity.
森林不需要我们，但我们需要森林——这一真理应指导我们在林业中的每一个决策。