—— 请按键盘 空白键 开始游戏 ——

The challenge in neuroscience is not just to map the brain, but to understand how it creates the mind.
那时我老得多,现在我比那时年轻。
The goal of cryptography is to make it so that the cost of breaking the system exceeds the value of the information protected.
The great advantage of old age is that you can be as rude as you like.