I read this book offered by a friend. These four simple tenets that are supposed to help them live: so here's I give them: 1. "let your word be impeccable" 2. "do not take things personally." 3. "make no assumptions". 4. "Always do your best." Good, but still buy the book because the author develops a bit around these four precepts, but not so! So this is very basic and general precepts. How is it then that this book meets such a success? First because it is very easy to read, short. Then because he is not done to upset anyone, religions are discussed but bypassed: the "agreements" Toltec go beyond (or below?) Of religious thought. One is in the philosophical style of Paulo Coelho (The Alchemist), said without malice because what is simple is not necessarily naïve. The first agreement is the most important "let your word be perfect", it reaffirms the importance of words, it shows us that everything we say is not trivial, it teaches us that we must not be afraid our own thinking. (Our "white magic," says the author). It's always a good advice to take. By cons do not expect in this book have information about the history and Toltec civilization nor the origin of these famous four agreements ..