A Journey into Gravity and Spacetime

"John Wheeler was an extraordinarily imaginative thinker, and is highly visual in the way that he presents very complex ideas. The ideas that he is presenting here, of course, are related to gravitation and Einstein’s general theory of relativity – so he is really looking at the deep structure of spacetime in a wonderfully vivid and fascinating way. It is a very visual presentation of a highly abstract subject. The book is part of the now-defunct Scientific American Library series, which I have at home. There are about fifty volumes in the series, and they’re all written at the level of Scientific American or New Scientist, so are relatively easy to understand."