科学的进步不仅依赖于事实的积累，还依赖于知识的组织。

人不是为了自己而活，而是为了某人而活，才能找到真正的自我。

In republican governments, men are all equal; equal they are also in despotic governments: in the former, because they are everything; in the latter, because they are nothing.

NP完全性不仅仅是一个理论上的好奇心；它对实际计算有着深远的影响。