The elegance of a proof is as important as its correctness.
学习的挑战不仅在于记忆,还在于从具体例子中归纳出更广泛的概念。
The story is a vehicle to carry ideas, not the other way around.
I think the most important thing is to be honest with yourself and with others.
图画是第一位的,文字是后来才有的。