行义事不能进行时，不要责怪道义。 

True leaders don't create followers; they create more leaders.

A key insight in learning theory is that the complexity of a hypothesis class is crucial for generalization.

One way of looking at speech is to say that it is a constant stratagem to cover nakedness.

时间不会治愈伤口，只会将它们埋在遗忘的层层之下。