FRANCE is taking its taste for erotic literature to new extremes with the publication of a series of novels about women who pay for sex.From the Marquis de Sade to The Story of O, the 1954 novel by Dominique Aury, the French have long enjoyed erotic literature — as has everybody else, judging by the recent international success of The Sexual Life of Catherine M, the memoir of Catherine Millet. This has unleashed a flood of memoirs from prostitutes and pornographers eager to cash in. Recently, however, some of the country’s most respected writers, including Pascal Bruckner, the essayist and...