The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
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。
释义:一个人即使一生都很聪明,也可能在某个时刻犯糊涂。
It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all.