领导者的愿景必须足够清晰以提供指导，但又足够灵活以进行调整。

人类一向有这个独特之处：它保留了两套法则——一套私下的，一套真正的；一套公开的，一套矫揉造作的。

The only thing more dangerous than ignorance is arrogance.

As to the gods, I do not know whether they exist or not, nor what they are like in form; for there are many things that hinder sure knowledge, the obscurity of the matter and the shortness of human life.

The only thing that overcomes hard luck is hard work.

唯一的限制是你为自己设定的限制。

我是那种会让你想扇你奶奶一巴掌的人。