I didn't think before reading this book that it was possible to explain such complicated concepts and theories without mathematics. The explanations are accessible for everybody and Brian Greene never gives up his scientific rigour : as soon as an analogy is used, the caveats are always meticulousely stated.<br>I loved a number of very famous science books like "a brief history of time"  by Stephen Hawking or "the first three minutes" by Steven Weinberg. I also read Leonard Susskind's "the black hole war" and "The cosmic landscape" that were excellent books as well...<br>But after the reading of all these books I always got the impression that here and there, the explanations were somewhat vague or incomplete... I was convinced that it was impossible to do better.<br>It is the reason why I was so amazed by what I discovered in "the Elegant Universe". Here, Brian Greene takes such a care of his readers that there isn't a single notion introduced without a very careful introduction of what it means, and you get quickly the feeling that literally everything that can be explained without mathematics is, and still you are astounded by the depth of the explanations.<br>"The elegant universe" is at this stage the best science book I have ever read.