Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
A good abstraction is one that emphasizes the important details and suppresses the unimportant ones.
我们需要从一种获取-制造-浪费的经济转向一种再生型经济。
我不知道如何解释,但我觉得我生来就是做这个的。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
学习数学的最好方法就是做数学。