Very mixed impression after reading this big novel.
The progress of the plot is very well led and the author has a certain mastery of the art of bouncing. The "Parisian" part is the most successful. For cons, I admit having often lost the thread when the speech is lost in a more obscure esotericism which the narrator seems to believe .... or used to shuffle the cards more.
The main character, depressed teacher spree over attending the beautiful Parisian neighborhoods and fart-fart resorts that his chest does not attracted me enough sympathy in his dark quest.
Very close to it, a nasty cop kind of BĂ©rurier without the banter. A minister of the interior which we will not look away twice in a recent government.
Essential ingredient in this type of literature: the Vatican intrigues, populated by evil beings or manipulative (although often the Holy Spirit flies over Rome without much down, you still have not spoof!).
A number of anachronisms (the heroine is Jewish, his uncle Israel too ... and when they open a local Bible, not the Hebrew version but most likely the Christian Bible as it read "School Jerusalem "they have on hand ...).
The author semmĂȘle quite abstruse in a very New Age syncretism and the historical character of Constantine the Great that should not be seen as THE "catalyst" for the expansion of Christianity.
Low concern of Theology (near the heretic Arius), Constantine Christians needed to unify an empire that ran the distaff and establish a temporal power by divine right, while moving the center of Christianity to the east, away , far away from Rome .... at the crossroads of trade routes.
In short, if we put aside all this esoteric nebula, the plot is definitely well made.