This is a beautiful, poetic, and generous book. I found that after reading and mulling over each section, I could eventually visualize how space was behaving under the influence of mass, and could also see why one needed to choose one's point of view carefully to understand the physics.The book is intended as an introduction to general relativity, without much tensor formalism, but it does not neglect the geometrical underpinnings. It presents a very nice way to get at the physics, with creative and light-hearted diagrams.I'm not so sure that Wheeler's own poems, which introduce many of the chapters, are a great success, but I admire and salute him for including them. Even his poetry helps to open additional doors to understanding general relativity.A book that is truly beautiful.