Complex sentence: Fontenelle's work was not cast polemically against the world views of either the Catholic Church or the protestant churches, nor did it attract the attention, positive or negative, of theologians or prelates.
Split into simpler sentences: Fontenelle's work was not cast polemically against the world views of either the Catholic Church or the protestant churches. Nor did it attract the attention, positive or negative, of theologians or prelates.