Theology and biography, faith and experience, contemplation and action are inseparable in the person of Martin Luther. That is why the search for the historical figure of Luther must always deal with a time of his life and faith, his world and his God, the image he had of himself and the judgments about him. Luther's personality is constitutive of the contemplative and meditative withdrawal of the reader and translator of the Bible, the praying man, the spiritual poet and the careful interpreter and author of texts, as well as the active, creative and communicative sincerity of the preacher, the polemicist, and Of the virtuoso of the language that opens the way to the public in the century of the press. Luther finds himself simultaneously before the face of his God and on the horizon of the world, and both from the understanding of himself as a man and a Christian arising from the interpretation of the word. Based on the most recent results of Luther's research, this book, which goes in search of the Wittenberg reformer, is both an introduction to the religious and historical event of the Reformation, tracing its origin and development and drawing a vivid picture of Their contexts and protagonists more outstanding.