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

Reply Obj. 3: God moves man to act, not only by proposing the appetible to the senses, or by effecting a change in his body, but also by moving the will itself; because every movement either of the will or of nature, proceeds from God as the First Mover. And just as it is not incompatible with nature that the natural movement be from God as the First Mover, inasmuch as nature is an instrument of God moving it: so it is not contrary to the essence of a voluntary act, that it proceed from God, inasmuch as the will is moved by God. Nevertheless both natural and voluntary movements have this in common, that it is essential that they should proceed from a principle within the agent. ________________________

SECOND ARTICLE [I-II, Q. 6, Art. 2]

Whether There Is Anything Voluntary in Irrational Animals?

Objection 1: It would seem that there is nothing voluntary in irrational animals. For a thing is called "voluntary" from voluntas (will). Now since the will is in the reason (De Anima iii, 9), it cannot be in irrational animals. Therefore neither is there anything voluntary in them.

Obj. 2: Further, according as human acts are voluntary, man is said to be master of his actions. But irrational animals are not masters of their actions; for "they act not; rather are they acted upon," as Damascene says (De Fide Orth. ii, 27). Therefore there is no such thing as a voluntary act in irrational animals.

Obj. 3: Further, Damascene says (De Fide Orth. 24) that "voluntary acts lead to praise and blame." But neither praise nor blame is due to the acts of irrational minds. Therefore such acts are not voluntary.

On the contrary, The Philosopher says (Ethic. iii, 2) that "both children and irrational animals participate in the voluntary." The same is said by Damascene (De Fide Orth. 24) and Gregory of Nyssa [*Nemesius, De Nat. Hom. xxxii.].

I answer that, As stated above (A. 1), it is essential to the voluntary act that its principle be within the agent, together with some knowledge of the end. Now knowledge of the end is twofold; perfect and imperfect. Perfect knowledge of the end consists in not only apprehending the thing which is the end, but also in knowing it under the aspect of end, and the relationship of the means to that end. And such knowledge belongs to none but the rational nature. But imperfect knowledge of the end consists in mere apprehension of the end, without knowing it under the aspect of end, or the relationship of an act to the end. Such knowledge of the end is exercised by irrational animals, through their senses and their natural estimative power.

Consequently perfect knowledge of the end leads to the perfect voluntary; inasmuch as, having apprehended the end, a man can, from deliberating about the end and the means thereto, be moved, or not, to gain that end. But imperfect knowledge of the end leads to the imperfect voluntary; inasmuch as the agent apprehends the end, but does not deliberate, and is moved to the end at once. Wherefore the voluntary in its perfection belongs to none but the rational nature: whereas the imperfect voluntary is within the competency of even irrational animals.

Reply Obj. 1: The will is the name of the rational appetite; and consequently it cannot be in things devoid of reason. But the word "voluntary" is derived from "voluntas" (will), and can be extended to those things in which there is some participation of will, by way of likeness thereto. It is thus that voluntary action is attributed to irrational animals, in so far as they are moved to an end, through some kind of knowledge.

Reply Obj. 2: The fact that man is master of his actions, is due to his being able to deliberate about them: for since the deliberating reason is indifferently disposed to opposite things, the will can be inclined to either. But it is not thus that voluntariness is in irrational animals, as stated above.

Reply Obj. 3: Praise and blame are the result of the voluntary act, wherein is the perfect voluntary; such as is not to be found in irrational animals. ________________________

THIRD ARTICLE [I-II, Q. 6, Art. 3]

Whether There Can Be Voluntariness Without Any Act?

Objection 1: It would seem that voluntariness cannot be without any act. For that is voluntary which proceeds from the will. But nothing can proceed from the will, except through some act, at least an act of the will. Therefore there cannot be voluntariness without act.

Obj. 2: Further, just as one is said to wish by an act of the will, so when the act of the will ceases, one is said not to wish. But not to wish implies involuntariness, which is contrary to voluntariness. Therefore there can be nothing voluntary when the act of the will ceases.

Obj. 3: Further, knowledge is essential to the voluntary, as stated above (AA. 1, 2). But knowledge involves an act. Therefore voluntariness cannot be without some act.

On the contrary, The word "voluntary" is applied to that of which we are masters. Now we are masters in respect of to act and not to act, to will and not to will. Therefore just as to act and to will are voluntary, so also are not to act and not to will.

I answer that, Voluntary is what proceeds from the will. Now one thing proceeds from another in two ways. First, directly; in which sense something proceeds from another inasmuch as this other acts; for instance, heating from heat. Secondly, indirectly; in which sense something proceeds from another through this other not acting; thus the sinking of a ship is set down to the helmsman, from his having ceased to steer. But we must take note that the cause of what follows from want of action is not always the agent as not acting; but only then when the agent can and ought to act. For if the helmsman were unable to steer the ship or if the ship's helm be not entrusted to him, the sinking of the ship would not be set down to him, although it might be due to his absence from the helm.

Since, then, the will by willing and acting, is able, and sometimes ought, to hinder not-willing and not-acting; this not-willing and not-acting is imputed to, as though proceeding from, the will. And thus it is that we can have the voluntary without an act; sometimes without outward act, but with an interior act; for instance, when one wills not to act; and sometimes without even an interior act, as when one does not will to act.

Reply Obj. 1: We apply the word "voluntary" not only to that which proceeds from the will directly, as from its action; but also to that which proceeds from it indirectly as from its inaction.

Reply Obj. 2: "Not to wish" is said in two senses. First, as though it were one word, and the infinitive of "I-do-not-wish." Consequently just as when I say "I do not wish to read," the sense is, "I wish not to read"; so "not to wish to read" is the same as "to wish not to read," and in this sense "not to wish" implies involuntariness. Secondly it is taken as a sentence: and then no act of the will is affirmed. And in this sense "not to wish" does not imply involuntariness.

Reply Obj. 3: Voluntariness requires an act of knowledge in the same way as it requires an act of will; namely, in order that it be in one's power to consider, to wish and to act. And then, just as not to wish, and not to act, when it is time to wish and to act, is voluntary, so is it voluntary not to consider. ________________________

FOURTH ARTICLE [I-II, Q. 6, Art. 4]

Whether Violence Can Be Done to the Will?

Objection 1: It would seem that violence can be done to the will. For everything can be compelled by that which is more powerful. But there is something, namely, God, that is more powerful than the human will. Therefore it can be compelled, at least by Him.

Obj. 2: Further, every passive subject is compelled by its active principle, when it is changed by it. But the will is a passive force: for it is a "mover moved" (De Anima iii, 10). Therefore, since it is sometimes moved by its active principle, it seems that sometimes it is compelled.