Raymond Monier was one of the youngest specialists in Roman law in the years after the First World War. His method, which is that of a rigourous technician in Roman law, appeared as early as 1922 in his doctoral thesis on the tignum iunctum. But the most famous of his works is of course his Manuel élémentaire, which was published from 1935 and has been reedited many times, and which met with a huge success. He was one of the greatest French supporters of a truly historical method applied to the study of the Roman institutions.