This is a book about evolution, but not just any since it from afar. It goes beyond the traditional framework of the appearance of life on Earth and its constant evolution. Hubert Reeves opens the ball starting from a hypothetical big bang that is can not be the only starting point. Hard to get general approval when it comes to explaining the genesis of our world, mythology it was tried before, not without having left some beautiful legends. Today science allows to see a little clearer in the immense cosmic and human chronology, although there are still many gray areas and some mistakes to correct. The authors present in their own way what made us men with, admittedly, a certain amount of philosophy and humility. Popular work to put in any hands until its epigone that will surely be bolder.