One of my favorite sci-fi novels of all time is "A Canticle for Leibowitz" by Walter Miller, Jr. Havig him speak may run ino the same problem as with Arthur C Clarke and Isaac Asimov, also two favorites. Or Orson Scott Card, Greg Bear, David Brin, Frank Herbert...
Hadn't heard about Jack Chalker.
Another requiring a time machine would be Ray Bradbury. I'm seeing so many names here that I have forgotten that I read in the distant past.
I think the Well of Souls would require a full season on TV. With the special effects available today it could be fantastic
"A Fire Upon The Deep" by Vernor Vinge left my mind racing with all sorts of ideas.
Strange to relate -- some scientists are now postulating that the equivalents of some of the strange effects he talked about may be real...
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.