There is no such thing as abstract art, or else all art is abstract, which amounts to the same thing. Abstract art no more exists than does curved art yellow art or green art.
Painting is... a richer language than words... Painting operates through signs which are not abstract and incorporeal like words. The signs of painting are much closer to the objects themselves.
Mud, rubbish and dirt are man's companions all his life; shouldn't they be precious to him, and isn't one doing man's service to remind him of their beauty?