One of the best books i have read fifty years (and perhaps best). Prof. Joseph Reichhholf history tells us too often not well known to humanity debut and he told us, particularly, what were our ancestors and how they lived. We learn (among others!) What they ate, and due to which we are fortunate dexister still today. The power supply for this is because we owe and it is clear that in the history of man, the development of his brain for example, it played a vital role. Knowing what happened, we can better understand that we are currently in extremely serious abuses, and that if we do not react strongly, humanity could disappear in less time than we think. But the book of Prof. Reichholf is remarkable in more than one way. First of there because he has much to be impressed by the expanse of his culture which is extremely broad. Although, if he is to have appreciable extensive knowledge must still know how to use intelligently. This is the case here. But this book is as exceptional as it is particularly well done pedagogically and that he puts very complex scientific concepts accessible to all. Prof. Reichholf knows precisely provide explanations that are clear to everyone and do not require any special prior scientific culture. This is rare because researchers do not always pedagogues. Another merit of this book is that it does not just ask questions on which all human sinterrogent a day or the other, but it also provides answers that are not fancy and are supported by dazzling reasoning clarity and logic. Examples: - The man he descended from monkeys? - Who are our true ancestors? - Why, if Africas was the cradle of mankind, the man the he left three times? - Why are they striped zebras? - Heaven, spoken of all religions, he has existed for real and where was he? - Where and when do we discovered bread and alcohol? - Etc. This is to say that Professor Reichholf (still unfortunately too little known in France), must be placed in the category of large brains which humanity can senorgueillir, of Albert Einstein in legal, Max Planck, Linus Pauling (one of only two people the world with Marie Curie to have received twice the Nobel prize) and some others. Finally, a well-known African proverb says, "When you do not know where you're going, at least know from where you come." Prof. Reichholf clearly answers this question and after reading this book, you will know indeed unambiguous! Pr Reichholf thank you!