Au Contraire!: Figuring Out the French, Gilles Asselin, Ruth Mastron, pp. 136, Nicholas Brealey Publishing, 2010, ISBN 9781931930925, ... through its distinctive traits and customs, Brittany captures what is still alive of Celtic culture in France. The traditional language of Brittany, Breton, was the dominant language of the westernmost part of the region until the mid-twentieth century, and it is still actively spoken by 5 percent ...