Most of the obituaries and tributes to David Hockney will, I imagine, focus primarily on his extraordinary craft and brilliance as an artist. Perhaps they might also mention his brilliance as a communicator (he was such a fine writer and speaker). But there was something else rather unique about him too. He was also strikingly honest about the tricks/techniques artists use and used to paint. His book Secret Knowledge is a rather wonderful detective work into how renaissance and Dutch golden age painters used glass and mirrors to help them master perspective. It's a pretty compelling case (see this video clip from a BBC doc he made alongside the book👇) though I'm sure some art historians will raise their eyebrows. Many will be aghast at the notion that greats like Vermeer might have been using lenses and camera obscuras to help them draw and paint. As if it were in some way "cheating". But Hockney was so self-evidently brilliant he was one of the few people who could document this without anyone gainsaying his own talent. There are very few artists, living or dead, who have this degree of self-confidence. Not just to know their craft, but to be bracingly honest about how it works. One other who comes to mind is Paul Simon: not just an extraordinary musician but is also an extraordinary communicator about the tricks and techniques of how to write and perform music. For many great artists, the temptation is to cloak their crafts in mystery, like a member of the magic circle. Hockney wasn't having any of it. So yes, he was a legend in all the obvious ways. But also in a few other less obvious ways as well. RIP.