Let me be cruel, not unnatural; I will speak daggers to her, but use none.
我可残酷,但不可无良心;我可用语言的利剑来刺戳她,但决不用真刃。
数学的本质不是使简单的事物复杂化,而是使复杂的事物简单化。
I don't compete with anyone. I compete with myself.