Emotions of the soul is, above all, a book on psychology in which Descartes tries to analyze the various emotions, whims and emotions in order to understand them and explain their mechanism, then to allow the mind to control them and harness them to serve the happiness of the individual in his emotional life. It is also a book on morals that completes what its author had developed in the science of provisional ethics. In this book, the will plays an important role, not in order to eradicate passions and passions, but in order to tame it and lead it towards this great victory in the individual's social life, the victory of the nobility of the heart over miserliness. Fear, indecision, cowardice and meanness. It is a book about the relationship of the soul with the body and the emotions and pleasures of each of them. The soul has its own mental pleasures, and the body also has its pleasures and pleasures that should not be neglected in favor of the former under the pretext of the priority of the spiritual over the physical. Descartes does not forget at all this person who carries the machine of the body, and he must enjoy what this body allows him of bounties and blessings.