text:  The first semester he was there, I'd talk to him occasionally and I'd get letters from him and he wasn't very happy. The second semester he was there, he suddenly was very happy and he had a social life and he had friends. And at the end of the semester, he came back to Los Angeles. He and I did some programming together. And it turned out that the turning point was he had gone off to Italy at Christmas time with a friend of his, Gerard.