A picture must be grasped at once, as a whole, like a piece of music.
我决定了，既然我要下地狱，那不如做得彻底些。
The world is a mirror, and we see in it what we are.
理解密码学的关键在于理解它不仅仅是关于保守秘密，而是关于管理信任。
酸和碱是互补的；没有另一个，一个就无法存在。