朋友能提供的唯一帮助,就是通过举一面镜子让你看到自己高尚的形象,从而保持勇气。
The deeper you go into mathematics, the more you realize how interconnected everything is.
没有夕阳产业,只有夕阳思维。
Freedom would be not to choose between black and white but to abjure such prescribed choices.