Quantum cryptography doesn't rely on the difficulty of mathematical problems, but on the fundamental laws of physics.
量子密码学不依赖于数学问题的难度，而是依赖于物理学的基本定律。
我们都身处阴沟，但仍有人仰望星空。
"We are all fools in love."
In individuals， insanity is rare；but in groups， parties， nations， and epochs， it is the rule.
"I’m a very positive thinker, and I think that is what helps me the most in difficult moments."
译文：注重小节的人不能成就大的威名，不忍受小的耻辱的人不能建立美名。
最好的采石场不会留下伤痕，只有负责任的转变。