In San Francisco, I found Warren Levinson, who had set up a program to study Rous Sarcoma Virus, an archetype for what we now call retroviruses. At the time, the replication of retroviruses was one of the great puzzles of animal virology. Levinson, Levintow and I joined forces in the hope of solving that puzzle.
I obtained eight years of elementary education in a two-room school, where I encountered a stern but engaging teacher who awakened my intellect with instruction that would seem rigorous today in many colleges. History figured large in the curriculum, exciting for me what was to become an enduring interest.
During the summer months of my high-school years, I befriended Dr. Robert Kough, a physician who cared for members of my family. Although he was practicing general medicine in a rural community when I met him, he was well equipped to arouse in me an interest not only in the life of a physician but in the fundaments of human biology.