I maintain contacts with researchers in dozens of fields, both for fun and to keep up. In fact, any well-read citizen can stay reasonably current nowadays, by reading any of the popular science magazines that describe remarkable advances every week, in terms non-specialists can understand. The advance of human knowledge has become — at long last — a vividly enjoyable spectator sport! And a growing movement toward amateur science shows there is room for participants at every level.

Orbit interview (2002)