Napoleon had a civil marriage with Joséphine de Beauharnais, without religious ceremony. During the campaign in Egypt, Napoleon showed much tolerance towards religion for a revolutionary general, holding discussions with Muslim scholars and ordering religious celebrations, but General Dupuy, who accompanied Napoleon, revealed, shortly after Pope Pius VI's death, the political reasons for such behaviour: "We are fooling Egyptians with our pretended interest for their religion; neither Bonaparte nor we believe in this religion more than we did in Pius the Defunct's one".[note 8] In his memoirs, Bonaparte's secretary Bourienne wrote about Napoleon's religious interests in the same vein. His religious opportunism is epitomized in his famous quote: "It is by making myself Catholic that I brought peace to Brittany and Vendée. It is by making myself Italian that I won minds in Italy. It is by making myself a Moslem that I established myself in Egypt. If I governed a nation of Jews, I should reestablish the Temple of Solomon." However, according to Juan Cole, "Bonaparte's admiration for the Prophet Muhammad, in contrast, was genuine" and during his captivity on St Helena he defended him against Voltaire's critical play Mahomet.

Answer this question, if possible (if impossible, reply "unanswerable"): Napoleon's marriage to Joséphine de Beauharnais lacked what kind of ceremony?
religious