It is not hard to understand modern art. If it hangs on a wall it's a painting and if you can walk around it it's a sculpture.

Sculpture is the art of the intelligence.

Architecture is inhabited sculpture.

Painting sculpture and architecture are finished but the art habit continues.

At a certain point I just put the building and the art impulse together. I decided that building was a legitimate way to make sculpture.

All of Koons's best art - the encased vacuum cleaners the stainless-steel Rabbit (the late-twentieth century's signature work of Simulationist sculpture) the amazing gleaming Balloon Dog and the cast-iron re-creation of a Civil War mortar exhibited last month at the Armory - has simultaneously flaunted extreme realism idealism and fantasy.