The books that the world calls immoral are books that show the world its own shame.

劳动是一切财富和一切文化的源泉。

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."

你给国王的越多，他想要的就越多。

I don't chase money, I attract money.

Mathematics is the key to understanding the universe.