By that time, as we saw, Pascal's _Letters_ had drawn the disdainful eyes of Europe to the teaching of Jesuit casuists. It makes little difference that the laxer of these moralists were but a few among the countless theologians of the Society, because nearly the whole of the Jesuits taught that, in case of a moral dilemma, a man might act on the opinion of a single casuist against the opinion of the remainder. It is true that they added that the one theologian must have a "grave authority," but, in view of the censorship and approval of the Society in each case, any Jesuit theologian would be regarded by admirers of the Society as a grave authority. This famous principle of Probabilism--the theory that one might follow a "probable" opinion in matters of moral guilt against "more probable" opinions--which had been adopted and almost appropriated by the Jesuits, gave great scandal, in view of the laxity of some of their prominent casuists, and at length a number of fathers assailed it and tried to remove the stigma from the Society. The most notable of these reformers was Father Thyrsus Gonzalez de Santalla, an able professor at Salamanca University. About the year 1670 he composed a Latin treatise on "The right use of probable opinions," and sent it to Rome for examination and approval. The authorities refused to sanction publication, but in 1676 Innocent XI., who frowned on the laxity of the Jesuit casuists, heard of the rejected manuscript and sent for it. Through the Inquisition the Pope then (in 1680) urged Gonzalez to publish the book, and communicated to General Oliva a decree to the effect that no father was to be prevented from teaching Probabiliorism, and that, on the contrary, none was to be allowed to defend Probabilism. General Oliva drew up a circular embodying the Pope's commands, which he was ordered to convey to his subjects, respectfully submitted it to the cardinals of the Inquisition, and then--suppressed it. Oliva died in 1681, his successor, Father de Noyelle, died in 1686, and Gonzalez himself was sent to Rome to take part in the election of 1687. The Pope welcomed him and intimated that he ought to be raised to the generalship, to save the Society from the "abyss" into which it was plunging. In spite of the fierce opposition of the Probabilists, he was elected by a narrow majority, and in 1691 he sent to the press his Latin treatise.