The greatest service that Aquaviva rendered the Society, and for which it will ever bless his memory is that he saved it from destruction in a fight that ran through the thirty years of his Generalate, and in which he found opposed to him Popes, kings, and princes, along with the terrible authority of the Spanish Inquisition and, worst of all, a number of discontented members of the Order, banded together and resorting to the most reprehensible tactics to alter completely the character of the Institute and to rob it of that Catholicity which constitutes its glory and its power.
He began his work by making it impossible, as far as it lay in his power, for a Jesuit to be used as the tool of any prince or potentate, no matter how dazzling might be the dignity with which one so employed was invested, or the glory which his work reflected on the Society. Thus, he put his ban on the office of royal confessor, which some of the members of the Society in those days were compelled to accept. He could not prevent it absolutely just then, but he laid down such stringent laws regarding it, that all ambition or desire of that very unapostolic work was eliminated. Its inconveniences were manifest. It is inconceivable, for instance, that a sovereign like Henry IV, who was a devoted friend of the Society, ever consulted Father Coton about scruples of conscience; for his majesty was never subject to spiritual worry of that description; and on the other hand, the unfortunate confessor was often suspected or accused of influencing or advising political measures with which he could have had nothing whatever to do. Jealousy also, of those who were appointed to the office was inevitable, and dislike and hatred not only of the individual who occupied the post, but of the order to which he belonged was aroused. Even the confessor's own relatives and friends were alienated, because he was forbidden to make use of his spiritual influence for their worldly advantage. Finally, apart from the loss of time, daily contact with the vice of the court, which he could not openly reprehend, necessarily reacted on the spiritual tone of the religious himself.
The same objections obtained for the flamboyant embassies which had been so much in vogue up to that time, and which are still quoted as evidencing the wonderful influence wielded by the Society in those days. They, too, were stopped, for the reason that although they were nearly always connected with the interests of the Faith, yet they were very largely controlled by worldly politics. Hence Possevin, who had made such a stir by his embassies to Muscovy, Sweden, Poland and elsewhere, was relegated to a class-room in Padua. Matthieu, who figured conspicuously in the politico-religious troubles of France as the "Courier de la Ligue," was told to desist from his activities, although Pope Sixtus V judged otherwise; and finally, the most famous orator of his day in France, Father Auger, who was loud in his denunciation of the Holy League, received peremptory orders to desist from discussing the subject at all. His quick obedience to the command was the best sermon he ever preached.