I haven't read this book yet.

From a TLS review of Pierre Bayard's Comment Parler des Livres Que L'on N'a Pas Lus (How to talk about books that you haven't read):

Bayard’s project is a serious one. He tells us, in his “Prologue”, that he was born into a family who read little, that he himself has almost no appetite for reading and that, anyway, he cannot find the time for it. As a (fifty-two-year-old) professor of French literature at the University of Paris VIII (and a practising psychoanalyst), he often finds himself obliged to comment on books he hasn’t looked at. And yet “non-reading” is a taboo subject in the circles in which he moves. He lists three constraints that we all feel as readers: “The first of these constraints could be called the obligation to read. We live in a society . . . in which reading still remains the object of a form of sacralization”, particularly where certain “canonical texts” are concerned: it is practically forbidden not to have read these. The second constraint “could be called the obligation to read a book in its entirety. If non-reading is frowned on, speed-reading and skimming are viewed in as poor a light”. For example, “it would be almost unthinkable for professors of literature to admit – what is after all true for most of them – that they have merely skimmed Proust’s work”. Can this really be the case? If so, it’s a dismaying thought – presumably Bayard has had some explaining to do to his colleagues since his book was published in France earlier this year. The third constraint, and the one which most of us would take as given, is the need to have read a book in order to be able to talk about it: according to Bayard, it is perfectly possible to have a fruitful discussion about a book one hasn’t read, even with someone who hasn’t read it either. These constraints lead to a lack of openness in our dealings with each other, Bayard claims, and generate unnecessary feelings of guilt.

He does not address the fact that most of us have our blind spots where particular authors are concerned, and that many of us do feel oppressed by the thought of the books we haven’t quite got round to reading, or wish that we had read years ago and know we now never will. Bayard is not interested in this; instead, he divides the works he mentions into four categories: “LI” indicates “livres inconnus” (books he is unfamiliar with); “LP” “livres parcourus” (books glanced at); “LE” “livres dont j’ai entendu parler” (books he has heard discussed) and “LO” “les livres que j’ai oubliés” (books he has read but forgotten). Ulysses, for example, falls into the category “LE”: he claims not to have read the novel, but he can place it within its literary context, knows that it is in a sense a reprise of the Odyssey, that it follows the ebb and flow of consciousness, and that it takes place in Dublin over the course of a single day. When teaching he makes frequent and unflinching references to Joyce.

And here from Jay McInerney in the N.Y. Times, on the English translation. (I really only skimmed this last review, I must confess.)