This is an interesting read, though not for the faint hearted nor those of an overtly religious disposition that may be sensitive to critiques of the same. De Sade was indeed, very ahead of his time in his philosophical argument and was a highly skilled narrator with a broad imagination. Whilst it is easy to state that his views were extremeist, it is however important to read between the lines. De Sade's era was governed by moralist and pious attitudes. You also have to take into account his cultural environment at the time of writing. For example, 120 Days of Sodom, his most controversial works of this collection, was written when he was in the Bastille, when one's imagination could run riot (here he seems highly focused on coprophilia/coprophagia, bestiality, incest and torture). Other works make mention of what would be regarded as edge play (e.g. autoerotic asphyxiation). De Sade was out to shock (and still does) but, by his own admission, all he asks for in return is overall objectivity from his readers, not collusion.