What the art historians had forgotten is that in Chinese, Japanese, Persian, and Indian art, they never painted shadows. Why did they paint shadows in European art? Shadows are because of optics. Optics need shadows and strong light. Strong light makes the deepest shadows. It took me a few years to realize fully that the art historians didn't grasp that. There are a lot of interesting new things, ideas, pictures.
David HockneyYou can't name the inventor of the camera. The 19th-century invention was chemical: the fixative.
David HockneyYou can't believe any picture nowadays, if it's digital. You can't really believe. If you see me shaking hands with Mr. [Barack] Obama, it doesn't mean I ever met him, does it?
David Hockney