The Philosopher's Kiss by Peter Prange
I got this from the Goodreads Early Review giveaway.
Description from Goodreads:
Paris, 1747. Betrayed by God and humanity, Sophie moves to the seething capital of the kingdom. To survive, she works at Café Procope, the meeting place for freethinkers and revolutionaries.
Against her will she falls deeply in love with one of the regular customers: Denis Diderot, the famed philosopher and a married man. He and his colleagues are planning the most dangerous book in the world since the appearance of the Bible: an encyclopedia. Even more explosive are the covert references in the Encyclopedia that threaten to undermine both the monarchy and the church. But Sophie soon realizes that the stakes are even higher for her personally. At risk are her right to freedom, love, and happiness.
Gone was an e-book I "got" from the LibraryThing Early Review giveaway. Got is a relative term as the download link had exceeded its limit by the time I got home from work last Monday, so had to use the flip link. Anywho....since I already posted the review, I won't repost that.