At David Hockney's "82 Portraits and 1 Still Life" exhibit at the Los Angeles County Museum of Art, through July 29th, 2018. His quote is about painting portraits.
See my next photo, edited to show a portrait of Hockney extracted from a mural at the exhibit and one of his portraits pasted in:
www.flickr.com/photos/russloar/41445668382/in/photostream
