扩展程序的最好方法是扩展它。
The best way to scale a program is to scale it.
The purpose of education is to make up for the shortcomings in our instinctive ways of thinking.
圆的周长大于任何内接等边多边形的周长，小于任何外切多边形的周长。
To make mistakes is human. To own your mistakes is divine. Nothing elevates a person higher than quickly admitting and taking personal responsibility for the mistakes you make and then fixing them fairly. If you mess up， fess up. It’s astounding how powerful this ownership is.
Virtue is more to be feared than vice， because its excesses are not subject to the regulation of conscience.