Science is the most powerful tool for human beings to understand and transform the world.

过去从未死去，它甚至不是过去。

If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."

The key to successful trading is to know yourself.

理解数学就是掌握宇宙的语言。