数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。

I look back on the past, committed a felony little fool, I want to communicate with him and let him understand, but I can't do this, the boy would not see the, only my old trunk.

The past is not a prison but a springboard.

数学的本质在于它的自由。

The difference between good and great is in the details.

It's all about trying to be a little less ignorant and a little less selfish every day.

你不是通过遵循规则来学习走路的。你是通过实践和跌倒来学习的。