Mental processes are tools for mastering the environment.
文学是社会的镜子,反映了它的美德和缺陷。
The web is a way of connecting people in a meaningful way, a way that was not possible before.
I'm not a product, I'm a person.
The moment eternal—just that and nothing more.
阿秒时间尺度对于电子运动的研究,就像高速摄像机对于研究动物运动一样重要。#