Many thanks to Dave Gray for his great sketches and notes. He is a flickr maniac and has some great stuff. By day he runs Xplane a visual thinking company. By night and, actually probably by day as well, he ponders all things and draws them. It seems like he has many spiritual quesitons. I'm not sure if he an draw those or not, but I be he paintts them.
Conversing with him was one of my Meshforum highlights.