It is this period from 1615 to 1664, which, for some undiscoverable reason, is described both by Ranke and Böhmer-Monod as marking the deterioration and decay of the Society. An examination of this indictment is, of course, imperative; and though it must necessarily be somewhat polemical, it may be helpful to a better understanding of the situation and give a more complete knowledge of facts. Ranke begins his attack by throwing discredit on Vitelleschi, describing him as a man of "little learning," adducing as his authority for this assertion a phrase in some Italian writer who says that Vitelleschi was a man "_di poche lettre ma di santità di vita non ordinaria_." Now the obvious meaning of this is, not that he was a man of "little learning," but that "he wrote very few letters." As he belonged to an unusually illustrious family of princes, cardinals, and popes; and as he had not only made the full course of studies in the Society, but had taught philosophy and theology for several years and was subsequently appointed to be the Rector of the Collegium Maximum of Naples, which was the Society's house of advanced studies, and as he was, besides, the author of several learned works, it is manifestly ridiculous to class him with the illiterates. As a matter of fact, Mutius Vitelleschi was a far better educated man than Leopold von Ranke. Father Nickel, in turn, is set down as "rude, discourteous, and repulsive; to such an extent that he was deposed from his office by the general congregation, which explicitly declared that he had forfeited all authority."