Discord would not offend our ears if there were not a standard of perfect harmony against which to judge all sounds. In the same way the existence of evil is an argument for the existence of God. We should not recognize imperfections as such unless there were a Perfect which they opposed. The world cannot be rationally explained without God; its very complexity forces the mind to believe that there must be something beyond all this, to have put it together. When we see a painting inside a frame, we know that someone has joined the two together. When we see a watch, we know that some intelligence has assembled it. Matter does not form itself into patterns without intelligence to guide it. The whole material universe is an argument for God.
--Archbishop Fulton J. Sheen, Crisis in History