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。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
如果你热爱你所做的事,你一生中就不会有一天是在工作。
Is there such a thing as a cheerful pessimist? That's what I am.