密码学是关于在存在对手的情况下进行通信的。

历史会证明谁真正为人民服务。

I don't let failure define me. I let it refine me.

心理过程的价值在于它对有机体适应生活的效用。

The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.