"Art can [be] truly relevant only when it isn't directly employed to do a job. If art represents itself, society can use it; but not if it advertises anything. Then it's advertising design. All this has nothing to do with 'Art for Art's Sake'. There is no such thing as 'Art for Art's Sake' "
"One has to believe in what one is doing, one has to commit oneself inwardly, in order to do painting. Once obsessed, one ultimately carries it to the point of believing that one might change human beings through painting. But if one lacks this passionate commitment, there is nothing left to do. Then it is best to leave it alone. For basically painting is total idiocy."
Some food for thought:
www.gerhard-richter.com/biography/quotes