"The Nature of Economics"
This book has been like a friend and companion since it came out; I carry it around with me. Jane Jacobs -- who in the sixties wrote masterfully about life in American cities -- now explains how economics and the built environment are inter-related, form part of the natural world and are essentially natural processes. She does this with flair, humor, conviction and imagination; the book is written as a lively and illuminating conversation among friends. I keep going back to it and always glimpse some new and provocative ideas and insights.