Here you go:

"My argument against God was that the universe seemed so cruel and unjust. But how had I got this idea of just and unjust? A man does not call a line crooked unless he has some idea of a straight line. What was I comparing this universe with when I called it unjust?"

And most people would provide the author (C.S Lewis), but I guess you want people to think you created it! LOL!