If an artist can't do anymore, then he should just quit; and an artist ought to be able to change his style without feeling bad. I heard that Lichtenstein said he might not be painting comic strips a year of two from now [1963]. I think that would be so great, to be able to change styles. And I think that's what's going to happen; that's going to be the whole new scene.

pp. 116-19 - What Is Pop Art? Interviews with Eight Painters, Part 1 (1963)