Don't let the noise of others' opinions drown out your own inner voice.
You don't have to be great to start, but you have to start to be great.
定理是永恒的;它们的证明是短暂的。
不要欺骗自己,认为某事正在工作,而实际上它并没有,否则你会固守一个糟糕的解决方案。
Girl talk is the best therapy