Ever since Albert Einstein's general theory of relativity burst upon the world in 1915 some of the most brilliant minds of our century have sought to decipher the mysteries bequeathed by that theory, a legacy so unthinkable in some respects that even Einstein himself rejected them. Which of these bi[...]

"One boggles at the thought of the stupendous work ...that has gone into the book. It deserves an honored place in what promises to be one of the great stages of advance in the physics of the cosmos." Contemporary Physics[...]