The last of human freedoms is the ability to choose one's attitude in any given set of circumstances.
大脑是一个经过自然选择的信息处理器。
The more you know yourself, the more patience you have for what you see in others.
永远保持节俭,除非是为了自己的热情。
密码学的本质是允许在存在对手的情况下进行通信。