Frank Hobbs blogs some thoughts about the painting process by the painter Philip Guston as well as a link to a video of Guston in his studio painting and discussing his work.
Hobbs quotes Guston: "Destruction of paintings is very interesting to me and almost crucial. Sometimes I find that what I destroyed five years ago I'll paint now, as if when the thing first appears you’re not ready to accept it. There's some mysterious process here that I don’t even want to understand…"