FOURTH ARTICLE [I-II, Q. 30, Art. 4]

Whether Concupiscence Is Infinite?

Objection 1: It would seem that concupiscence is not infinite. For

the object of concupiscence is good, which has the aspect of an end.

But where there is infinity there is no end (Metaph. ii, 2).

Therefore concupiscence cannot be infinite.

Obj. 2: Further, concupiscence is of the fitting good, since it

proceeds from love. But the infinite is without proportion, and

therefore unfitting. Therefore concupiscence cannot be infinite.

Obj. 3: Further, there is no passing through infinite things: and

thus there is no reaching an ultimate term in them. But the subject

of concupiscence is not delighted until he attain the ultimate term.

Therefore, if concupiscence were infinite, no delight would ever

ensue.

_On the contrary,_ The Philosopher says (Polit. i, 3) that "since

concupiscence is infinite, men desire an infinite number of things."

_I answer that,_ As stated above (A. 3), concupiscence is twofold;

one is natural, the other is not natural. Natural concupiscence

cannot be actually infinite: because it is of that which nature

requires; and nature ever tends to something finite and fixed. Hence

man never desires infinite meat, or infinite drink. But just as in

nature there is potential successive infinity, so can this kind of

concupiscence be infinite successively; so that, for instance, after

getting food, a man may desire food yet again; and so of anything

else that nature requires: because these bodily goods, when obtained,

do not last for ever, but fail. Hence Our Lord said to the woman of

Samaria (John 4:13): "Whosoever drinketh of this water, shall thirst

again."

But non-natural concupiscence is altogether infinite. Because, as

stated above (A. 3), it follows from the reason, and it belongs to

the reason to proceed to infinity. Hence he that desires riches, may

desire to be rich, not up to a certain limit, but to be simply as

rich as possible.

Another reason may be assigned, according to the Philosopher (Polit.

i, 3), why a certain concupiscence is finite, and another infinite.

Because concupiscence of the end is always infinite: since the end is

desired for its own sake, e.g. health: and thus greater health is

more desired, and so on to infinity; just as, if a white thing of

itself dilates the sight, that which is more white dilates yet more.

On the other hand, concupiscence of the means is not infinite,

because the concupiscence of the means is in suitable proportion to

the end. Consequently those who place their end in riches have an

infinite concupiscence of riches; whereas those who desire riches, on

account of the necessities of life, desire a finite measure of

riches, sufficient for the necessities of life, as the Philosopher

says (Polit. i, 3). The same applies to the concupiscence of any

other things.

Reply Obj. 1: Every object of concupiscence is taken as something

finite: either because it is finite in reality, as being once

actually desired; or because it is finite as apprehended. For it

cannot be apprehended as infinite, since the infinite is that "from

which, however much we may take, there always remains something to be

taken" (Phys. iii, 6).

Reply Obj. 2: The reason is possessed of infinite power, in a certain

sense, in so far as it can consider a thing infinitely, as appears in

the addition of numbers and lines. Consequently, the infinite, taken

in a certain way, is proportionate to reason. In fact the universal

which the reason apprehends, is infinite in a sense, inasmuch as it

contains potentially an infinite number of singulars.

Reply Obj. 3: In order that a man be delighted, there is no need for

him to realize all that he desires: for he delights in the

realization of each object of his concupiscence.

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Summa Theologica, Part I-II (Pars Prima Secundae) From the Complete American Edition · 第 214 / 746 题