I paint directly – then it's said to be an exact copy; and not art, probably because there's no perspective or shading. It doesn't look like a painting of something, it looks like the thing itself. Instead of looking like a painting of a billboard – the way a Reginald Marsh would look – Pop Art seems to be the actual thing. It is intensification, a stylistic intensification of the excitement which the subject matter has for me; but the style is, as you said, cool.
pp. 25-27 - 'What is Pop Art? Interviews with eight painters' (1963)