"Theo de Raadt (pronounced "wrought") is the 32-year-old
principal architect of the OpenBSD (http://www.openbsd.org)
operating system project. He was born in Pretoria, S.A. When he was
nine he moved to Canada and now lives in Calgary, Alberta."
"Theo seems possessed of a consuming idealism akin to that
of Chuck Moore or Richard Stallman. At the same time, his aims in
software engineering are reminiscent of the ideals of computer
scientists such as Edsgar Dijkstra and William Kahan; that the
correctness of a program should be subject to proof."
"Theo graciously took time to chat with Dr. Dobb's Journal
contributing editor Jack Woehr at USENIX Security Symposium