It all began, to paraphrase J. Bédier in his «Commentaries on the Chanson de Roland», on the road, one of the great protagonists of the cultural, devotional, social and commercial flourishing of Europe from antiquity to the present day; the instrument that, by innervating all the continents, made the cultural unity of the West possible. The routes changed over time, but always testified to the great mobility of men and women, far greater than we can imagine today.