Paris (AFP) - He may be the highest-selling artist alive, but on his first day at art school Jeff Koons had a crushing realisation: he "knew nothing" about the world he was about to join.Today likened to the pop art icon Andy Warhol, the teenage Koons was lucky to survive the bolt that hit him as a 17-year-old newcomer to the Maryland Institute College of Art."We went on a bus to see a great cubism collection.