密码学的力量不仅在于保守秘密，还在于在数字世界中建立信任。
The power of cryptography is not just in keeping secrets, but in enabling trust in a digital world.
引自孟德斯鸠，刘凯湘在《民法总论》中引用并阐释其意义
智者在自己的心灵中寻找幸福，愚者则在外部追逐。
君子的话虽然少，但却真实；小人的话虽然多，但却虚假。点评：东汉著名学者王符曾言「大人不华，君子务实。」
"A novel is a machine for thinking, a way of exploring the world without leaving your chair."
For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.