In my, in my second year I went up to the medical school where I did Anatomy and Physiology, and that was the beginnings really of, of a new kind of interest, because physiology, I just found totally remarkable. Actually, what I found interesting there was, what is now called biochemistry and- And was there biochemistry as such? It was taught as part of physiology. We did a little bit of biochemistry as it was called, which were largely sort of tests for- of urine for glucose. There was a kind of standard thing which every medical student went to. I have to say that the teaching in medicine in South Africa was based on the Scots system, and they aimed to produce someone who could leave the medical school and do everything in medicine and so we had a lot of courses there which I'll come to in a moment. But there were two people, there were a number of people, when I came to do second year medicine, that I found very, very stimulating. One was Joe Gilman, and since he's played quite a big role in mine and other people's lives, he needs something of his own, but I'll come back to that if you- we can leave that. So- but the one thing that I think you will- that I learnt during this which I found, is that this is the first time I came to realise my teachers knew nothing. And this had come because I discovered a book which is up there on the shelf- no, no- and which is called "Perspectives in Biochemistry".