Burroughs is gone.
Leary is gone.
Robert Anton Wilson, is not doing real well right now.
The co-author of the Illuminatus! trilogy and author of Prometheus Rising and the Cosmic Trigger series is in very poor health, and an exceedingly grim financial state just now.
Also known to some of us Pope Bob, Mordecai Malignatus, and a host of other pseudonyms, he is one of the greatest minds of the last 100 years, as a synthesist of science, philosophy and psychology.