Today I'm doing a little bit of editing of the Schoolmaster and again the canon clerk of Geneva. In part because I'm pulling a fair number of Matt Briggg' glosses from the Aquinas passage, and because I had to transliterate the gk in a more correct version in Calvin.
Here the question of the fall does occur, and free will, and the nature of our psyche. Calvin divides reason from will: noting will is a choice. I would say reason is a tool. Both would say you need more than reason to come to Christ: you can call this our fallen nature or a lack of divine revelation, divine light. Both describe the same nature.
2 Now, wherever there is an order among things, it is necessary that, the nearer one thing is to the first principle, the stronger it must be. This is apparent in the order of divine manifestation. For invisible things whose vision is beatifying, and to which faith applies, are first revealed by God to the blessed angels through open vision, as is clear from our previous statements.
3 In turn, by the intermediary ministry of the angels they are manifested to certain men; not, of course, through open vision, but through a kind of certitude resulting from divine revelation.
4 This revelation, then, is accomplished by means of a certain interior and intelligible light, elevating the mind to the perception of things that the understanding cannot reach by its natural light. For, just as the understanding by its natural light is made certain concerning things that it knows by that light (for instance, concerning first principles), so also does it acquire certitude concerning things which it apprehends by supernatural light.
Now, this latter certitude is needed so that the things that are grasped by divine revelation may be offered to others, for we cannot present things to others with assurance if we have not certain knowledge of them. Now, accompanying this light that we have mentioned, which illumines the mind from within, there are at times in divine revelation other external or internal aids to knowledge; for instance, a spoken message, or something heard by the external senses which is produced by divine power, or something perceived internally through imagination due to God’s action, or also some things produced by God that are seen by bodily vision, or that are internally pictured in the imagination.
From these presentations, by the light internally impressed on the mind, man receives a knowledge of divine things. Consequently, without the interior light, these aids do not suffice for a knowledge of divine things, but the interior light does suffice without them.
5 However, this revelation of the invisible things of God belongs to wisdom, which is properly the knowledge of divine things. Thus, it is said in Wisdom (7:27-28) that the wisdom of God “conveys herself through nations into holy souls… for God loves no one but him who dwells with wisdom.” And again in Sirach (15:5) it is said: “the Lord has filled him with the spirit of wisdom and understanding.”
6 But, since “the invisible things of God … are clearly seen, being understood by the things that are made,” not only divine things are revealed to men by divine grace, but also some created things, and this seems to pertain to knowledge. Hence, it is said in Wisdom (7:17): “For He has given me the true knowledge of the things that are: to know the disposition of the whole world, and the virtues of the elements.” And in 2 Chronicles (1:12) the Lord said to Solomon: “Knowledge and wisdom are granted to you.”
7 But the things that man knows he cannot properly convey to the knowledge of another man, except by speech. So, since those who receive a revelation from God, according to the divinely established order, should instruct others, it was necessary for them also to be given the grace of speech, in keeping with what the benefit of those who were to be instructed demanded.
Aquinas is useful here, because his argument moves into Calvin's consideration of our state before the fall and his observation, which all men of a few years can confirm, that the will vacillates and is weak.
Calvin is not a hypercalvinist. He sees there is a place for will, and that we have a choice. But he also sees that to make that choice requires the intervention of God: Aquinas would agree with him.
It is best to see systematic theology not as a controversy, but as variations on a theme.
7. From this method of teaching we are forced somewhat to dissent. For philosophers, being unacquainted with the corruption of nature, which is the punishment of revolt, erroneously confound two states of man which are very different from each other. Let us therefore hold, for the purpose of the present work, that the soul consists of two parts, the intellect and the will --the office of the intellect being to distinguish between objects, according as they seem deserving of being approved or disapproved; and the office of the will, to choose and follow what the intellect declares to be good, to reject and shun what it declares to be bad (Plato, in Phaedro). We dwell not on the subtlety of Aristotle, that the mind has no motion of itself; but that the moving power is choice, which he also terms the appetite intellect. Not to lose ourselves in superfluous questions, let it be enough to know that the intellect is to us, as it were, the guide and ruler of the soul; that the will always follows its beck, and waits for its decision, in matters of desire. For which reason Aristotle truly taught, that in the appetite there is a pursuit and rejection corresponding in some degree to affirmation and negation in the intellect (Aristot. Ethic. lib. 6 sec. 2). Moreover, it will be seen in another place (Book 2 c. 2 see. 12-26), how surely the intellect governs the will. Here we only wish to observe, that the soul does not possess any faculty which may not be duly referred to one or other of these members. And in this way we comprehend sense under intellect. Others distinguish thus: They say that sense inclines to pleasure in the same way as the intellect to good; that hence the appetite of sense becomes concupiscence and lust, while the affection of the intellect becomes will. For the term appetite, which they prefer, I use that of will, as being more common.
8. Therefore, God has provided the soul of man with intellect, by which he might discern good from evil, just from unjust, and might know what to follow or to shun, reason going before with her lamp; whence philosophers, in reference to her directing power, have called her to; eugemonikon. To this he has joined will, to which choice belongs. Man excelled in these noble endowments in his primitive condition, when reason, intelligence, prudence, and Judgment, not only sufficed for the government of his earthly life, but also enabled him to rise up to God and eternal happiness. Thereafter choice was added to direct the appetites, and temper all the organic motions; the will being thus perfectly submissive to the authority of reason. In this upright state, man possessed freedom of will, by which, if he chose, he was able to obtain eternal life. It were here unseasonable to introduce the question concerning the secret predestination of God, because we are not considering what might or might not happen, but what the nature of man truly was. Adam, therefore, might have stood if he chose, since it was only by his own will that he fell; but it was because his will was pliable in either directions and he had not received constancy to persevere, that he so easily fell. Still he had a free choice of good and evil; and not only so, but in the mind and will there was the highest rectitude, and all the organic parts were duly framed to obedience, until man corrupted its good properties, and destroyed himself. Hence the great darkness of philosophers who have looked for a complete building in a ruin, and fit arrangement in disorder. The principle they set out with was, that man could not be a rational animal unless he had a free choice of good and evil. They also imagined that the distinction between virtue and vice was destroyed, if man did not of his own counsel arrange his life. So far well, had there been no change in man. This being unknown to them, it is not surprising that they throw every thing into confusion. But those who, while they profess to be the disciples of Christ, still seek for free-will in man, notwithstanding of his being lost and drowned in spiritual destruction, labour under manifold delusion, making a heterogeneous mixture of inspired doctrine and philosophical opinions, and so erring as to both. But it will be better to leave these things to their own place (see Book 2 chap. 2) At present it is necessary only to remember, that man, at his first creation, was very different from all his posterity; who, deriving their origin from him after he was corrupted, received a hereditary taint. At first every part of the soul was formed to rectitude. There was soundness of mind and freedom of will to choose the good. If any one objects that it was placed, as it were, in a slippery position, because its power was weak, I answer, that the degree conferred was sufficient to take away every excuse. For surely the Deity could not be tied down to this condition,--to make man such, that he either could not or would not sin. Such a nature might have been more excellent; but to expostulate with God as if he had been bound to confer this nature on man, is more than unjust, seeing he had full right to determine how much or how little He would give. Why He did not sustain him by the virtue of perseverance is hidden in his counsel; it is ours to keep within the bounds of soberness. Man had received the power, if he had the will, but he had not the will which would have given the power; for this will would have been followed by perseverance. Still, after he had received so much, there is no excuse for his having spontaneously brought death upon himself. No necessity was laid upon God to give him more than that intermediate and even transient will, that out of man's fall he might extract materials for his own glory.