"We are all in the gutter, but some of us are looking at the stars."

I cannot fix on the hour, or the spot, or the look, or the words, which laid the foundation. It is too long ago. I was in the middle before I knew that I had begun.

知识是人类的最高财富，而分享知识则是最高的慷慨。

You don't have to have the ability that quantum mechanics requires.You just have to know a few simple things and really know them.