Montaigne's Essays, published in successive editions between 1580 and 1588, inaugurate a genre of universal literature. Under this then novel title, the author conceives his writings as "attempts" of a thought that boldly addresses issues of various kinds, extension and substance. Concerns of the time, aspects of everyday life, features and anecdotes of antiquity, serious philosophical and moral questions are treated without subjection to prejudices or systems, in a free language that dispenses with all rhetoric. Deeply impregnated by classical culture, the Essays seem to engage in a pleasant conversation, not only with the ancient and modern authors they frequently quote, but above all with the reader, the true recipient of reflections whose ultimate object is the human condition in all its complexity and variation. That is why the author will say that he himself is the subject of his book: thus, his self-portrait serves to reveal the human being, which he defines as "an extraordinarily vain, changeable and fluctuating object". This edition of the Essays, the first bilingual in the Hispanic field, presents the French original, refined and modernized, against a rigorous translation and sensitive to the multiple qualities of the text. At the end of the volume, an exhaustive block of notes allows the reader to unravel in all its richness the warp of this exceptional work.