不要把事实告诉不值得的人。
It is better by noble boldness to run the risk of being subject to half of the evils we anticipate than to remain in cowardly listlessness for fear of what might happen.
The universe is not only stranger than we imagine, it is stranger than we can imagine.
The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.
