实现不可能的唯一方法就是相信它是可能的。
In mathematics, you don't understand things. You just get used to them.
每个圣人都有过去，每个罪人都有未来。
Those who do not have power over the story that dominates their lives, the power to retell it, rethink it, deconstruct it, joke about it, and change it as they change, truly are powerless, because they cannot think new thoughts.
The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.
