It is men like stars, some are brighter than others, purest most beautiful ...! They guide, open new paths, new dreams ... Light years the poor "little minds" that populate our lives cathode in this book, one finger on the origin of everything! The author does not claim to provide all the solutions to all problems; when leaving science to address one of the hypothetical, it clearly says! outlines the theories, developed those he deems the most "probable". Stephen Hawking is a magician! to the reading of his book time passes much faster (curvature of spacetime ?? ;-)!), and when one has finished reading, the hard part: aterrir, reconnect with the " real "world ... and watch broadcasts of reality shows, debilitating, or results of the lottery ..." light years, I tell you !! "