My father was always a much more remote figure in a way. I mean, he enjoyed having a bright son and he would boast about all my exams and all the prizes I won and so on but I was for him more of a source of pride but not so much a personal friend. But my mother was very close and she taught me a lot about life and, of course, she taught me that friendship and human relationships were more important than books, and that if I buried myself in books all the time and did nothing but mathematics, I'd miss out on what was most important in life, and in the end I would be sour and disappointed if I discovered too late that I had missed out on love and affection and all the other things. And so she taught me about other kinds of literature, and in particular she was very fond of quoting Goethe's Faust; that was for her one of the main sort of sources of wisdom, this fellow who makes his pact with the devil for knowledge and power and neglects his friends and his girlfriend in particular and just uses people instead of understanding them. So he, Faust, was held up to me as what I should not become, which was quite appropriate. So anyway from her I got, I think, the best kind of education in the human aspects of life.