The past beats inside me like a second heart.

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

阴阳交替变化就是道，继承它的是善，成就它的是性。

贪婪读书，终生学习，保持好奇，日日增慧。

最好的投资是那些将要改变世界的人。