心灵是一个动态的过程系统。
The mind is a dynamic system of processes.
一个没有书籍的世界是一个没有光明的世界。
The only thing I'm afraid of is bees.
The universe is not only stranger than we imagine, it is stranger than we can imagine.
Never stop learning; the moment you do, you become obsolete.
安全和隐私是用户对互联网信任的基础。