FIFTH ARTICLE [I-II, Q. 19, Art. 5]

Whether the Will Is Evil When It Is at Variance with Erring Reason?

Objection 1: It would seem that the will is not evil when it is at

variance with erring reason. Because the reason is the rule of the

human will, in so far as it is derived from the eternal law, as

stated above (A. 4). But erring reason is not derived from the

eternal law. Therefore erring reason is not the rule of the human

will. Therefore the will is not evil, if it be at variance with

erring reason.

Obj. 2: Further, according to Augustine, the command of a lower

authority does not bind if it be contrary to the command of a higher

authority: for instance, if a provincial governor command something

that is forbidden by the emperor. But erring reason sometimes

proposes what is against the command of a higher power, namely, God

Whose power is supreme. Therefore the decision of an erring reason

does not bind. Consequently the will is not evil if it be at variance

with erring reason.

Obj. 3: Further, every evil will is reducible to some species of

malice. But the will that is at variance with erring reason is not

reducible to some species of malice. For instance, if a man's reason

err in telling him to commit fornication, his will in not willing to

do so, cannot be reduced to any species of malice. Therefore the will

is not evil when it is at variance with erring reason.

_On the contrary,_ As stated in the First Part (Q. 79, A. 13),

conscience is nothing else than the application of knowledge to some

action. Now knowledge is in the reason. Therefore when the will is at

variance with erring reason, it is against conscience. But every such

will is evil; for it is written (Rom. 14:23): "All that is not of

faith"--i.e. all that is against conscience--"is sin." Therefore the

will is evil when it is at variance with erring reason.

_I answer that,_ Since conscience is a kind of dictate of the reason,

for it is an application of knowledge to action, as was stated in

the First Part (Q. 19, A. 13), to inquire whether the will is evil

when it is at variance with erring reason, is the same as to inquire

"whether an erring conscience binds." On this matter, some

distinguished three kinds of actions: for some are good generically;

some are indifferent; some are evil generically. And they say that if

reason or conscience tell us to do something which is good

generically, there is no error: and in like manner if it tell us not

to do something which is evil generically; since it is the same

reason that prescribes what is good and forbids what is evil. On the

other hand if a man's reason or conscience tells him that he is bound

by precept to do what is evil in itself; or that what is good in

itself, is forbidden, then his reason or conscience errs. In like

manner if a man's reason or conscience tell him, that what is

indifferent in itself, for instance to raise a straw from the ground,

is forbidden or commanded, his reason or conscience errs. They say,

therefore, that reason or conscience when erring in matters of

indifference, either by commanding or by forbidding them, binds: so

that the will which is at variance with that erring reason is evil

and sinful. But they say that when reason or conscience errs in

commanding what is evil in itself, or in forbidding what is good in

itself and necessary for salvation, it does not bind; wherefore in

such cases the will which is at variance with erring reason or

conscience is not evil.

But this is unreasonable. For in matters of indifference, the will

that is at variance with erring reason or conscience, is evil in some

way on account of the object, on which the goodness or malice of the

will depends; not indeed on account of the object according as it is

in its own nature; but according as it is accidentally apprehended by

reason as something evil to do or to avoid. And since the object of

the will is that which is proposed by the reason, as stated above (A.

3), from the very fact that a thing is proposed by the reason as

being evil, the will by tending thereto becomes evil. And this is the

case not only in indifferent matters, but also in those that are good

or evil in themselves. For not only indifferent matters can receive

the character of goodness or malice accidentally; but also that which

is good, can receive the character of evil, or that which is evil,

can receive the character of goodness, on account of the reason

apprehending it as such. For instance, to refrain from fornication is

good: yet the will does not tend to this good except in so far as it

is proposed by the reason. If, therefore, the erring reason propose

it as an evil, the will tends to it as to something evil.

Consequently the will is evil, because it wills evil, not indeed that

which is evil in itself, but that which is evil accidentally, through

being apprehended as such by the reason. In like manner, to believe

in Christ is good in itself, and necessary for salvation: but the

will does not tend thereto, except inasmuch as it is proposed by the

reason. Consequently if it be proposed by the reason as something

evil, the will tends to it as to something evil: not as if it were

evil in itself, but because it is evil accidentally, through the

apprehension of the reason. Hence the Philosopher says (Ethic. vii,

9) that "properly speaking the incontinent man is one who does not

follow right reason; but accidentally, he is also one who does not

follow false reason." We must therefore conclude that, absolutely

speaking, every will at variance with reason, whether right or

erring, is always evil.

Reply Obj. 1: Although the judgment of an erring reason is not

derived from God, yet the erring reason puts forward its judgment as

being true, and consequently as being derived from God, from Whom is

all truth.

Reply Obj. 2: The saying of Augustine holds good when it is known

that the inferior authority prescribes something contrary to the

command of the higher authority. But if a man were to believe the

command of the proconsul to be the command of the emperor, in

scorning the command of the proconsul he would scorn the command of

the emperor. In like manner if a man were to know that human reason

was dictating something contrary to God's commandment, he would not

be bound to abide by reason: but then reason would not be entirely

erroneous. But when erring reason proposes something as being

commanded by God, then to scorn the dictate of reason is to scorn

the commandment of God.

Reply Obj. 3: Whenever reason apprehends something as evil, it

apprehends it under some species of evil; for instance, as being

something contrary to a divine precept, or as giving scandal, or for

some such like reason. And then that evil is reduced to that species

of malice.

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Summa Theologica, Part I-II (Pars Prima Secundae) From the Complete American Edition · 第 149 / 746 题