We could use up two Eternities in learning all that is to be learned about our own world and the thousands of nations that have arisen and flourished and vanished from it. Mathematics alone would occupy me eight million years.
Mark TwainNever learn to do anything: if you don't learn, you'll always find someone else to do it for you.
Mark TwainPerhaps no poet is a conscious plagiarist, but there seems to be warrant for suspecting that there is no poet who is not at one time or another an unconscious one.
Mark Twain