In 1958 when I was eight years old my parents took me to New York. I fell in love with its powers of abstraction. It became the city of my mind. In 1988 we took our son to New York. He was eight, and the same thing happened. Now, the door to his room is covered with a large map of midtown Manhattan in detailed axonometric projection. He reads books about places and technologies and is thinking of becoming an architect.