Denis Dutton, founder of the invaluable Arts & Letters Daily website, has died at age 66 of prostate cancer. He was a professor of philosophy at the U. of Canterbury in New Zealand. When I mentioned to him once where I was from, he pointed out that he'd grown up in the San Fernando Valley, too, and his parents had owned the well-known Dutton's bookstore in North Hollywood.
His recent book is The Art Instinct: Beauty, Pleasure, and Human Evolution. He also wrote insightfully about the always interesting topic of art forgery.