Of Use, Which Is an Act of the Will in Regard to the Means

Of Use, Which Is an Act of the Will in Regard to the Means — St. Thomas Aquinas asks: Whether use is an act of the will?; Whether use is to be found in irrational animals?; Whether use regards also the last end?; Whether use precedes choice?.

We must now consider use; concerning which there are four points of inquiry:

Article 1: Whether use is an act of the will?

Augustine says (De Trin. x, 11): "To use is to apply to something to purpose of the will."

The use of a thing implies the application of that thing to an operation: hence the operation to which we apply a thing is called its use; thus the use of a horse is to ride, and the use of a stick is to strike. Now we apply to an operation not only the interior principles of action, viz. the powers of the soul or the members of the body; as the intellect, to understand; and the eye, to see; but also external things, as a stick, to strike. But it is evident that we do not apply external things to an operation save through the interior principles which are either the powers of the soul, or the habits of those powers, or the organs which are parts of the body. Now it has been shown above () that it is the will which moves the soul's powers to their acts, and this is to apply them to operation. Hence it is evident that first and principally use belongs to the will as first mover; to the reason, as directing; and to the other powers as executing the operation, which powers are compared to the will which applies them to act, as the instruments are compared to the principal agent. Now action is properly ascribed, not to the instrument, but to the principal agent, as building is ascribed to the builder, not to his tools. Hence it is evident that use is, properly speaking, an act of the will.

Article 2: Whether use is to be found in irrational animals?

Augustine says (QQ. 83, qu. 30): "None but a rational animal can make use of a thing."

as stated above (), to use is to apply an active principle to action: thus to consent is to apply the appetitive movement to the desire of something, as stated above (). Now he alone who has the disposal of a thing, can apply it to something else; and this belongs to him alone who knows how to refer it to something else, which is an act of the reason. And therefore none but a rational animal consents and uses.

Article 3: Whether use regards also the last end?

Augustine says (QQ. 83, qu. 30): "No one rightly uses God, but one enjoys Him." But God alone is the last end. Therefore we cannot use the last end.

Use, as stated above (), implies the application of one thing to another. Now that which is applied to another is regarded in the light of means to an end; and consequently use always regards the means. For this reason things that are adapted to a certain end are said to be "useful"; in fact their very usefulness is sometimes called use.

It must, however, be observed that the last end may be taken in two ways: first, simply; secondly, in respect of an individual. For since the end, as stated above (; ), signifies sometimes the thing itself, and sometimes the attainment or possession of that thing (thus the miser's end is either money or the possession of it); it is evident that, simply speaking, the last end is the thing itself; for the possession of money is good only inasmuch as there is some good in money. But in regard to the individual, the obtaining of money is the last end; for the miser would not seek for money, save that he might have it. Therefore, simply and properly speaking, a man enjoys money, because he places his last end therein; but in so far as he seeks to possess it, he is said to use it.

Article 4: Whether use precedes choice?

Damascene says (De Fide Orth. ii, 22) that "the will after choosing has an impulse to the operation, and afterwards it uses (the powers)." Therefore use follows choice.

The will has a twofold relation to the thing willed. One, according as the thing willed is, in a way, in the willing subject, by a kind of proportion or order to the thing willed. Wherefore those things that are naturally proportionate to a certain end, are said to desire that end naturally. Yet to have an end thus is to have it imperfectly. Now every imperfect thing tends to perfection. And therefore both the natural and the voluntary appetite tend to have the end in reality; and this is to have it perfectly. This is the second relation of the will to the thing willed.

Now the thing willed is not only the end, but also the means. And the last act that belongs to the first relation of the will to the means, is choice; for there the will becomes fully proportionate, by willing the means fully. Use, on the other hand, belongs to the second relation of the will, in respect of which it tends to the realization of the thing willed. Wherefore it is evident that use follows choice; provided that by use we mean the will's use of the executive power in moving it. But since the will, in a way, moves the reason also, and uses it, we may take the use of the means, as consisting in the consideration of the reason, whereby it refers the means to the end. In this sense use precedes choice.