Andrew Marr was in Paris on Friday to record a special edition of Start the Week about France. Hours later the Paris attacks happened. This programme is not about these attacks or Islamic State or the French role in the war in Syria, but it is a conversation about the political, cultural and religious fault lines in France from the 19th century to today. As BBC Radio 4 plans to broadcast a retelling of Emile Zola's 20 novel cycle, Les Rougon-Macquart, the journalist Anne-Elisabeth Moutet explores whether Zola is a 19th century gateway into understanding modern France. The novelist Agnès Desarthe has set her latest novel at the beginning of the 20th century and mixes the intimate with the great events of French history. The French Resistance is one of France's heroic myths and is central to the country's identity, but the historian Robert Gildea says the reality is far more complex. And contemporary France in all its complexity is represented in Karim Miské's thriller set among the radical Islamic preachers, Christian fundamentalists and corrupt police officers in one of the poorest suburbs of Paris. Producer: Katy Hickman.