FOURTH ARTICLE [I, Q. 83, Art. 4]

Whether Free-will Is a Power Distinct from the Will?

Objection 1: It would seem that free-will is a power distinct from the

will. For Damascene says (De Fide Orth. ii, 22) that _thelesis_ is one

thing and _boulesis_ another. But _thelesis_ is the will, while

_boulesis_ seems to be the free-will, because _boulesis,_ according to

him, is will as concerning an object by way of comparison between two

things. Therefore it seems that free-will is a distinct power from the

will.

Obj. 2: Further, powers are known by their acts. But choice, which is

the act of free-will, is distinct from the act of willing, because

"the act of the will regards the end, whereas choice regards the

means to the end" (Ethic. iii, 2). Therefore free-will is a distinct

power from the will.

Obj. 3: Further, the will is the intellectual appetite. But in the

intellect there are two powers--the active and the passive.

Therefore, also on the part of the intellectual appetite, there must

be another power besides the will. And this, seemingly, can only be

free-will. Therefore free-will is a distinct power from the will.

_On the contrary,_ Damascene says (De Fide Orth. iii, 14) free-will

is nothing else than the will.

_I answer that,_ The appetitive powers must be proportionate to the

apprehensive powers, as we have said above (Q. 64, A. 2). Now, as on

the part of the intellectual apprehension we have intellect and

reason, so on the part of the intellectual appetite we have will, and

free-will which is nothing else but the power of choice. And this is

clear from their relations to their respective objects and acts. For

the act of _understanding_ implies the simple acceptation of

something; whence we say that we understand first principles, which

are known of themselves without any comparison. But to _reason,_

properly speaking, is to come from one thing to the knowledge of

another: wherefore, properly speaking, we reason about conclusions,

which are known from the principles. In like manner on the part of

the appetite to "will" implies the simple appetite for something:

wherefore the will is said to regard the end, which is desired for

itself. But to "choose" is to desire something for the sake of

obtaining something else: wherefore, properly speaking, it regards

the means to the end. Now, in matters of knowledge, the principles

are related to the conclusion to which we assent on account of the

principles: just as, in appetitive matters, the end is related to

the means, which is desired on account of the end. Wherefore it is

evident that as the intellect is to reason, so is the will to the

power of choice, which is free-will. But it has been shown above (Q.

79, A. 8) that it belongs to the same power both to understand and to

reason, even as it belongs to the same power to be at rest and to be

in movement. Wherefore it belongs also to the same power to will and

to choose: and on this account the will and the free-will are not two

powers, but one.

Reply Obj. 1: _Boulesis_ is distinct from _thelesis_ on account of a

distinction, not of powers, but of acts.

Reply Obj. 2: Choice and will--that is, the act of willing--are

different acts: yet they belong to the same power, as also to

understand and to reason, as we have said.

Reply Obj. 3: The intellect is compared to the will as moving the

will. And therefore there is no need to distinguish in the will an

active and a passive will.

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Summa Theologica, Part I (Prima Pars) From the Complete American Edition · 第 517 / 722 题