Molina himself, who is perhaps one of the first, with Fonseca, to have systematized this point, and from whom the others derived their name of Molinists, says in the book that he wrote on the reconciliation of freewill with grace, about the year 1570, that the Spanish doctors (he means principally the Thomists), who had been writing then for twenty years, finding no other way to explain how God could have a certain knowledge of contingent futurities, had introduced predetermination as being necessary to free actions.
40. As for himself, he thought to have found another way. He considers that there are three objects of divine knowledge, the possibles, the actual events and the conditional events that would happen in consequence of a certain condition if it were translated into action. The knowledge of possibilities is what is called the 'knowledge of mere intelligence'; that of events occurring actually in the progress of the universe is called the 'knowledge of intuition'. And as there is a kind of mean between the merely possible and the pure and absolute event, to wit, the conditional event, it can be said also, according to Molina, that there is a mediate knowledge between that of intuition and that of intelligence. Instance is given of the famous example of David asking the divine oracle whether the inhabitants of the town of Keilah, where he designed to shut himself in, would deliver him to Saul, supposing that Saul should besiege the town. God answered yes; whereupon David took a different course. Now some advocates of this mediate knowledge are of opinion that God, foreseeing what men would do of their own accord, supposing they were placed in such and such circumstances, and knowing that they would make ill use of their free will, decrees to refuse them grace and favourable circumstances. And he may justly so decree, since in any case these circumstances and these aids would not have served them aught. But Molina contents himself with finding therein generally a reason for the decrees of God, founded on what the free creature would do in such and such circumstances.
41. I will not enter into all the detail of this controversy; it will suffice for me to give one instance. Certain older writers, not acceptable to St. Augustine and his first disciples, appear to have had ideas somewhat approaching those of Molina. The Thomists and those who call themselves disciples of St. Augustine (but whom their opponents call Jansenists) combat this doctrine on
philosophical and theological grounds. Some maintain that mediate knowledge must be included in the knowledge of mere intelligence. But the principal objection is aimed at the foundation of this knowledge. For what foundation can God have for seeing what the people of Keilah would do? A simple contingent and free act has nothing in itself to yield a principle of certainty, unless one look upon it as predetermined by the decrees of God, and by the causes that are dependent upon them. Consequently the difficulty existing in actual free actions will exist also in conditional free actions, that is to say, God will know them only under the condition of their causes and of his decrees, which are the first causes of things: and it will not be possible to separate such actions from those causes so as to know a contingent event in a way that is independent of the knowledge of its causes. Therefore all must of necessity be traced back to the predetermination of God's decrees, and this mediate knowledge (so it will be said) will offer no remedy. The theologians who profess to be adherents of St. Augustine claim also that the system of the Molinists would discover the source of God's grace in the good qualities of man, and this they deem an infringement of God's honour and contrary to St. Paul's teaching.
42. It would be long and wearisome to enter here into the replies and rejoinders coming from one side and the other, and it will suffice for me to explain how I conceive that there is truth on both sides. For this result I resort to my principle of an infinitude of possible worlds, represented in the region of eternal verities, that is, in the object of the divine intelligence, where all conditional futurities must be comprised. For the case of the siege of Keilah forms part of a possible world, which differs from ours only in all that is connected with this hypothesis, and the idea of this possible world represents that which would happen in this case. Thus we have a principle for the certain knowledge of contingent futurities, whether they happen actually or must happen in a certain case. For in the region of the possibles they are represented as they are, namely, as free contingencies. Therefore neither the foreknowledge of contingent futurities nor the foundation for the certainty of this foreknowledge should cause us perplexity or seem to prejudice freedom. And though it were true and possible that contingent futurities consisting in free actions of reasonable creatures were entirely independent of the decrees of God and of external causes,
there would still be means of foreseeing them; for God would see them as they are in the region of the possibles, before he decrees to admit them into existence.
43. But if the foreknowledge of God has nothing to do with the dependence or independence of our free actions, it is not so with the foreordinance of God, his decrees, and the sequence of causes which, as I believe, always contribute to the determination of the will. And if I am for the Molinists in the first point, I am for the predeterminators in the second, provided always that predetermination be taken as not necessitating. In a word, I am of opinion that the will is always more inclined towards the course it adopts, but that it is never bound by the necessity to adopt it. That it will adopt this course is certain, but it is not necessary. The case corresponds to that of the famous saying, Astra inclinant, non necessitant, although here the similarity is not complete. For the event towards which the stars tend (to speak with the common herd, as if there were some foundation for astrology) does not always come to pass, whereas the course towards which the will is more inclined never fails to be adopted. Moreover the stars would form only a part of the inclinations that co-operate in the event, but when one speaks of the greater inclination of the will, one speaks of the result of all the inclinations. It is almost as we have spoken above of the consequent will in God, which results from all the antecedent wills.
44. Nevertheless, objective certainty or determination does not bring about the necessity of the determinate truth. All philosophers acknowledge this, asserting that the truth of contingent futurities is determinate, and that nevertheless they remain contingent. The thing indeed would imply no contradiction in itself if the effect did not follow; and therein lies contingency. The better to understand this point, we must take into account that there are two great principles of our arguments. The one is the principle of contradiction, stating that of two contradictory propositions the one is true, the other false; the other principle is that of the determinant reason: it states that nothing ever comes to pass without there being a cause or at least a reason determining it, that is, something to give an a priori reason why it is existent rather than non-existent, and in this wise rather than in any other. This great principle holds for all events, and a contrary instance will never be supplied: and although more often than not we are
insufficiently acquainted with these determinant reasons, we perceive nevertheless that there are such. Were it not for this great principle we could never prove the existence of God, and we should lose an infinitude of very just and very profitable arguments whereof it is the foundation; moreover, it suffers no exception, for otherwise its force would be weakened. Besides, nothing is so weak as those systems where all is unsteady and full of exceptions. That fault cannot be laid to the charge of the system I approve, where everything happens in accordance with general rules that at most are mutually restrictive.
45. We must therefore not imagine with some Schoolmen, whose ideas tend towards the chimerical, that free contingent futurities have the privilege of exemption from this general rule of the nature of things. There is always a prevailing reason which prompts the will to its choice, and for the maintenance of freedom for the will it suffices that this reason should incline without necessitating. That is also the opinion of all the ancients, of Plato, of Aristotle, of St. Augustine. The will is never prompted to action save by the representation of the good, which prevails over the opposite representations. This is admitted even in relation to God, the good angels and the souls in bliss: and it is acknowledged that they are none the less free in consequence of that. God fails not to choose the best, but he is not constrained so to do: nay, more, there is no necessity in the object of God's choice, for another sequence of things is equally possible. For that very reason the choice is free and independent of necessity, because it is made between several possibles, and the will is determined only by the preponderating goodness of the object. This is therefore not a defect where God and the saints are concerned: on the contrary, it would be a great defect, or rather a manifest absurdity, were it otherwise, even in men here on earth, and if they were capable of acting without any inclining reason. Of such absurdity no example will ever be found; and even supposing one takes a certain course out of caprice, to demonstrate one's freedom, the pleasure or advantage one thinks to find in this conceit is one of the reasons tending towards it.