FOURTH ARTICLE [II-II, Q. 18, Art. 4]

Whether There Is Certainty in the Hope of a Wayfarer?

Objection 1: It would seem that there is no certainty in the hope of

a wayfarer. For hope resides in the will. But certainty pertains not

to the will but to the intellect. Therefore there is no certainty in

hope.

Obj. 2: Further, hope is based on grace and merits, as stated above

(Q. 17, A. 1). Now it is impossible in this life to know for certain

that we are in a state of grace, as stated above (I-II, Q. 112, A.

5). Therefore there is no certainty in the hope of a wayfarer.

Obj. 3: Further, there can be no certainty about that which may fail.

Now many a hopeful wayfarer fails to obtain happiness. Therefore

wayfarer's hope has no certainty.

_On the contrary,_ "Hope is the certain expectation of future

happiness," as the Master states (Sent. iii, D, 26): and this may be

gathered from 2 Tim. 1:12, "I know Whom I have believed, and I am

certain that He is able to keep that which I have committed to Him."

_I answer that,_ Certainty is found in a thing in two ways,

essentially and by participation. It is found essentially in the

cognitive power; by participation in whatever is moved infallibly to

its end by the cognitive power. In this way we say that nature works

with certainty, since it is moved by the Divine intellect which moves

everything with certainty to its end. In this way too, the moral

virtues are said to work with greater certainty than art, in as much

as, like a second nature, they are moved to their acts by the reason:

and thus too, hope tends to its end with certainty, as though sharing

in the certainty of faith which is in the cognitive faculty.

This suffices for the Reply to the First Objection.

Reply Obj. 2: Hope does not trust chiefly in grace already received,

but on God's omnipotence and mercy, whereby even he that has not

grace, can obtain it, so as to come to eternal life. Now whoever has

faith is certain of God's omnipotence and mercy.

Reply Obj. 3: That some who have hope fail to obtain happiness, is

due to a fault of the free will in placing the obstacle of sin, but

not to any deficiency in God's power or mercy, in which hope places

its trust. Hence this does not prejudice the certainty of hope.

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Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province · 第 123 / 1128 题