True leadership is about making tough decisions for the greater good.

There is only one good, which is knowledge, and one evil, which is ignorance.

心理现象是为生活服务的工具。

Men trust their ears less than their eyes.

组合数学就像是不用实际计数的计数艺术。

生活就是当你忙于制定其他计划时发生的事情。

人们为了保护自己不受伤害，会伤害他人。