Philip's court can only be described as extravagant. Despite the flourishing bourgeois culture of Burgundy, with which the ducal court kept in close touch, he and the aristocrats who formed most of his inner circle retained a world-view dominated by the ideas and traditions of chivalry. He declined membership in the Order of the Garter in 1422, which would have been considered an act of treason against the king of France, his feudal overlord. Instead, he created his own Order of the Golden Fleece, based on the Knights of the Round Table and the myth of Jason, in 1430. In time his order would become the most prestigious and historic of all knightly orders of chivalry in all of Europe.