In the '50s, to appropriate was a real no-no. However, once you go from Duchamp to Jasper Johns to Warhol, appropriation becomes not only a common thing to do, but possibly the central way of working in the era we call postmodernism.
Irving SandlerI had come to believe that I was not as clever as some other kids who were my friends. And yet I knew even then that I wanted to do something of an intellectual nature, and excel at it. I also realized that if I was going to succeed at all, it would be through hard work.
Irving Sandler