Capra, author of The Tao of Physics , is famous for his unique blend of physics and mysticism. Here he traces the development of his thought by presenting a series of conversations with many influential thinkers, including Werner Heisenberg, R. D. Laing, Alan Watts, and Margaret Lock. These conversations took place between 1969 and the ``Big Sur Dialogues'' symposium in 1979 and range in subject from science to politics, anthropology to holistic medicine. Capra feels that his contribution has been merely to establish links between the ideas of these highly original thinkers, all of whom figured largely in his evolution from a conventional physicist to the spokesman for a new vision of reality. C. Robert Nixon, M.L.S., Lafayette, Ind.