痛苦可以是一种知识形式。

创新是区分领导者和追随者的关键。

Nature tends to produce constancy in all her works, but she does not always succeed.

The quality of an organization's principles determines the quality of its actions.

如果你不喜欢某件事，就改变它。如果你无法改变它，就改变你的态度。