I saw the movie with Jean Claude Carrière in Spanish classes during a theme for our year: the conquest of America by the Portuguese and Spanish. This is what has given me want to read the book. In the same way that the film had upset me, the book also whack me and I'm still horrified (although I already knew) to the idea that men could destroy, torture, rape, massacre in all impunity (and so on ...) others - having a soul or not! This novel, which takes a historical reality, gives some weight to this tiny episode in the history. I loved the characters Bartholomew de las Casas and that of Sepulveda (despite his ideas ...) and their reasoning and arguing: persuasion against conviction, the use of logical reasoning emotions against cold scientist. On seeing the views of people of the time, we discover other customs through this verbal fight and that's very interesting. To read.