In 1937, Braudel returned to Paris from Brazil. However, the journey was as significant as arriving at his destination; on his way, he met Lucien Febvre, who was the co-founder of the influential "Annales" journal. The two had booked passage on the same ship. Braudel had started archival research on his doctorate on the Mediterranean when he fell under the influence of the "Annales" School around 1938. Also around this time he entered the École pratique des hautes études as an instructor in history. He worked with Lucien Febvre, who would later read the early versions of Braudel's "magnum opus" and provide him with editorial advice.