The Final Exit to reach for the Art 3. Limits of Greenberg’s art theory Immanuel Kant & His Tombstone Even though Greenberg was the most influential art critic in modern era his theory of art was challenged by many other artists, art historians, and art critics. I would like to point out two problems with his theory of art. Greenberg in his article “Towards a Newer Laocoon,”insists the au..