Thomas Aquinas - Summa Theologica, Part I-II (Pars Prima Secundae)

Reply Obj. 1: The sufficient mover of a power is none but that object that in every respect presents the aspect of the mover of that power. If, on the other hand, it is lacking in any respect, it will not move of necessity, as stated above.

Reply Obj. 2: The intellect is moved, of necessity, by an object which is such as to be always and necessarily true: but not by that which may be either true or false—viz. by that which is contingent: as we have said of the good.

Reply Obj. 3: The last end moves the will necessarily, because it is the perfect good. In like manner whatever is ordained to that end, and without which the end cannot be attained, such as "to be" and "to live," and the like. But other things without which the end can be gained, are not necessarily willed by one who wills the end: just as he who assents to the principle, does not necessarily assent to the conclusions, without which the principles can still be true. ________________________

THIRD ARTICLE [I-II, Q. 10, Art. 3]

Whether the Will Is Moved, of Necessity, by the Lower Appetite?

Objection 1: It would seem that the will is moved of necessity by a passion of the lower appetite. For the Apostle says (Rom. 7:19): "The good which I will I do not; but the evil which I will not, that I do": and this is said by reason of concupiscence, which is a passion. Therefore the will is moved of necessity by a passion.

Obj. 2: Further, as stated in Ethic. iii, 5, "according as a man is, such does the end seem to him." But it is not in man's power to cast aside a passion at once. Therefore it is not in man's power not to will that to which the passion inclines him.

Obj. 3: Further, a universal cause is not applied to a particular effect, except by means of a particular cause: wherefore the universal reason does not move save by means of a particular estimation, as stated in De Anima iii, 11. But as the universal reason is to the particular estimation, so is the will to the sensitive appetite. Therefore the will is not moved to will something particular, except through the sensitive appetite. Therefore, if the sensitive appetite happen to be disposed to something, by reason of a passion, the will cannot be moved in a contrary sense.

On the contrary, It is written (Gen. 4:7): "Thy lust [Vulg. 'The lust thereof'] shall be under thee, and thou shalt have dominion over it." Therefore man's will is not moved of necessity by the lower appetite.

I answer that, As stated above (Q. 9, A. 2), the passion of the sensitive appetite moves the will, in so far as the will is moved by its object: inasmuch as, to wit, man through being disposed in such and such a way by a passion, judges something to be fitting and good, which he would not judge thus were it not for the passion. Now this influence of a passion on man occurs in two ways. First, so that his reason is wholly bound, so that he has not the use of reason: as happens in those who through a violent access of anger or concupiscence become furious or insane, just as they may from some other bodily disorder; since such like passions do not take place without some change in the body. And of such the same is to be said as of irrational animals, which follow, of necessity, the impulse of their passions: for in them there is neither movement of reason, nor, consequently, of will.

Sometimes, however, the reason is not entirely engrossed by the passion, so that the judgment of reason retains, to a certain extent, its freedom: and thus the movement of the will remains in a certain degree. Accordingly in so far as the reason remains free, and not subject to the passion, the will's movement, which also remains, does not tend of necessity to that whereto the passion inclines it. Consequently, either there is no movement of the will in that man, and the passion alone holds its sway: or if there be a movement of the will, it does not necessarily follow the passion.

Reply Obj. 1: Although the will cannot prevent the movement of concupiscence from arising, of which the Apostle says: "The evil which I will not, that I do—i.e. I desire"; yet it is in the power of the will not to will to desire or not to consent to concupiscence. And thus it does not necessarily follow the movement of concupiscence.

Reply Obj. 2: Since there is in man a twofold nature, intellectual and sensitive; sometimes man is such and such uniformly in respect of his whole soul: either because the sensitive part is wholly subject to his reason, as in the virtuous; or because reason is entirely engrossed by passion, as in a madman. But sometimes, although reason is clouded by passion, yet something of this reason remains free. And in respect of this, man can either repel the passion entirely, or at least hold himself in check so as not to be led away by the passion. For when thus disposed, since man is variously disposed according to the various parts of the soul, a thing appears to him otherwise according to his reason, than it does according to a passion.

Reply Obj. 3: The will is moved not only by the universal good apprehended by the reason, but also by good apprehended by sense. Wherefore he can be moved to some particular good independently of a passion of the sensitive appetite. For we will and do many things without passion, and through choice alone; as is most evident in those cases wherein reason resists passion. ________________________

FOURTH ARTICLE [I-II, Q. 10, Art. 4]

Whether the Will Is Moved of Necessity by the Exterior Mover Which Is

God?

Objection 1: It would seem that the will is moved of necessity by God. For every agent that cannot be resisted moves of necessity. But God cannot be resisted, because His power is infinite; wherefore it is written (Rom. 9:19): "Who resisteth His will?" Therefore God moves the will of necessity.

Obj. 2: Further, the will is moved of necessity to whatever it wills naturally, as stated above (A. 2, ad 3). But "whatever God does in a thing is natural to it," as Augustine says (Contra Faust. xxvi, 3). Therefore the will wills of necessity everything to which God moves it.

Obj. 3: Further, a thing is possible, if nothing impossible follows from its being supposed. But something impossible follows from the supposition that the will does not will that to which God moves it: because in that case God's operation would be ineffectual. Therefore it is not possible for the will not to will that to which God moves it. Therefore it wills it of necessity.

On the contrary, It is written (Ecclus. 15:14): "God made man from the beginning, and left him in the hand of his own counsel." Therefore He does not of necessity move man's will.

I answer that, As Dionysius says (Div. Nom. iv) "it belongs to Divine providence, not to destroy but to preserve the nature of things." Wherefore it moves all things in accordance with their conditions; so that from necessary causes through the Divine motion, effects follow of necessity; but from contingent causes, effects follow contingently. Since, therefore, the will is an active principle, not determinate to one thing, but having an indifferent relation to many things, God so moves it, that He does not determine it of necessity to one thing, but its movement remains contingent and not necessary, except in those things to which it is moved naturally.

Reply Obj. 1: The Divine will extends not only to the doing of something by the thing which He moves, but also to its being done in a way which is fitting to the nature of that thing. And therefore it would be more repugnant to the Divine motion, for the will to be moved of necessity, which is not fitting to its nature; than for it to be moved freely, which is becoming to its nature.

Reply Obj. 2: That is natural to a thing, which God so works in it that it may be natural to it: for thus is something becoming to a thing, according as God wishes it to be becoming. Now He does not wish that whatever He works in things should be natural to them, for instance, that the dead should rise again. But this He does wish to be natural to each thing—that it be subject to the Divine power.