Ponce Millet’s Le Livre de Raison provides the historian with this human flesh which Marc Bloch considers important. It portrays happenings in day-to-day life as experienced by the son of a day-laborer in the northern areas of the Champagne region in France. An expression of a very intimate private writing, the text presents the author’s life history. It is at the same time a family story, an address book, and an accounts book register. It presents the personal story of an almost anonymous character: the peculiar story of an ordinary man. From a shepherd, to a servant, a clerk, a hawker, a bookbinder, and a harvester, Ponce Millet is a true static-traveler; a true symbol of plurality in activities, carrying out both rural and urban activities of the time. The social success of the author is evident, but there is a price to pay. Beyond the costs of everyday and ordinary things, Ponce Millet writes on the real human costs of work. However, witness, actor, propagandist of popular Champagne Jansenism, the author also knows the burden and cost of sin. One is always ready to listen to the devil and fall prey to his demons. The freedom of an individual and the wind of freedom (René Taveneaux) definitely portray Ponce Millet as a tough man.