The greatest wisdom is to know that you know nothing.

The liabilities are always percent good.It's the assets you have to worry about.

The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.

Strategy execution is more important than strategy formulation.

数学的目标是理解我们观察到的现象背后的结构。

Life consists not in holding good cards，but in playing well those you hold.

动物的心脏是其生命的基础，是体内一切的主宰。

最危险的幻觉是被我们误认为现实的那些。