Roy Lichtenstein (1923-1997) is a famous American pop artist. Professionally trained, his big breakthrough came when he began painting cartoons and comic strips for his small sons who pointed to a comic book once and said: "We bet you can't paint as good as that, Dad."
The cartoon-inspired striking compositions built out of flat colours, geometric shapes, thick outlines, and the Ben-Day printing dots became enormously popular. Trying to make them appeared as little hand-made as possible, he called his art 'industrial painting'.
Many critics challenged his work originality, harshly criticizing it as vulgar and empty. He himself did not think that "whatever is meant by my paintings is important to art". But others disagreed: his 'elevating low art into the high art' breakthrough is a very important innovation.