Self-expression is a hallmark of an artist, of art, to get something off one's chest, to sing one's song. So that element is present in all art. It is the key to even standing up and saying, "Hey, listen to me." Self-expression can be based on looking at the world and making observations about it.
George CarlinHow old are you? 'I'm four and a half!' You're never thirty-six and a half. You're four and a half, going on five! That's the key.
George Carlin