The Shadow Proves the Sunshine

That is a song by Switchfoot from their newest album Nothing Is Sound. The idea behind the song is that there are bad things in the world, that we are not all good as people, but that the shadow proves the sunshine - in other words, the fact that there are bad things and we recognise them as bad means that there must be some standard of good.

I agree with this theory. I don't agree with the theory that you need to have suffering or bad things in order to appreciate good things. God didn't make the world with bad things in it to make His goodness even more apparent - He created it perfectly in the first place. You don't need the shadow to have the sun, but you do need the sun to see the shadow.