I knew, quite early on, that for- maybe for family reasons, I had no choice but to become a biologist, and the school was very supportive. I was taught by Richard Schardt, who is still a schoolmaster there, and who was the most encouraging and sweet man that you could ever imagine. Now, why did you know, or think, you had to be a biologist? Well, it was a sort of family business. My grandfather was a biologist, J. S. Haldane; my uncle, J.B.S. Haldane was another biologist. My two older brothers were turning into biologists, one of them reading medicine, but still, still a biologist.