数学的本质不是把简单的事情复杂化,而是把复杂的事情简单化。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
Innovation is not from nothing to something, but from something to better.
人生最大的美德是真正的勇气,懂得如何面对事实并超越它们。
The task of the writer is to make the invisible visible.