---
title: "Summa Theologica, First Half"
author: "Thomas Aquinas"
translator: "Fathers of the English Dominican Province"
languages: [en]
shelf: "Medieval"
section: 473 of 1210
url: https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/473/
cite: "Thomas Aquinas, tr. Fathers of the English Dominican Province, Summa Theologica, First Half, section 473. Scriptura (scriptura.si), https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/473/"
---

# Summa Theologica, First Half

*Thomas Aquinas, tr. Fathers of the English Dominican Province*

God and creation, human action, law and grace, then faith, hope, charity and justice.

## 473. I–II · Q. 18, Art. 7: Whether the species derived from the end is contained under the species derived from the object, as under its genus, or conversely?

Source: https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/473/ · cite a paragraph as https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/473/#p-N

[¶0] Whether the species derived from the end is contained under the species derived from the object, as under its genus, or conversely?

[¶1] Objection 1: It would seem that the species of goodness derived from the end is contained under the species of goodness derived from the object, as a species is contained under its genus; for instance, when a man commits a theft in order to give alms. For an action takes its species from its object, as stated above (AA 2,6). But it is impossible for a thing to be contained under another species, if this species be not contained under the proper species of that thing; because the same thing cannot be contained in different species that are not subordinate to one another. Therefore the species which is taken from the end, is contained under the species which is taken from the object.

[¶2] Objection 2: Further, the last difference always constitutes the most specific species. But the difference derived from the end seems to come after the difference derived from the object: because the end is something last. Therefore the species derived from the end, is contained under the species derived from the object, as its most specific species.

[¶3] Objection 3: Further, the more formal a difference is compared to genus, as form to matter. But the species derived from the end, is more formal than that which is derived from the object, as stated above (A 6). Therefore the species derived from the end is contained under the species derived from the object, as the most specific species is contained under the subaltern genus.

[¶4] On the contrary, Each genus has its determinate differences. But an action of one same species on the part of its object, can be ordained to an infinite number of ends: for instance, theft can be ordained to an infinite number of good and bad ends. Therefore the species derived from the end is not contained under the species derived from the object, as under its genus.

[¶5] I answer that, The object of the external act can stand in a twofold relation to the end of the will: first, as being of itself ordained thereto; thus to fight well is of itself ordained to victory; secondly, as being ordained thereto accidentally; thus to take what belongs to another is ordained accidentally to the giving of alms. Now the differences that divide a genus, and constitute the species of that genus, must, as the Philosopher says (Metaph. vii, 12), divide that genus essentially: and if they divide it accidentally, the division is incorrect: as, if one were to say: "Animals are divided into rational and irrational; and the irrational into animals with wings, and animals without wings"; for "winged" and "wingless" are not essential determinations of the irrational being. But the following division would be correct: "Some animals have feet, some have no feet: and of those that have feet, some have two feet, some four, some many": because the latter division is an essential determination of the former. Accordingly when the object is not of itself ordained to the end, the specific difference derived from the object is not an essential determination of the species derived from the end, nor is the reverse the case. Wherefore one of these species is not under the other; but then the moral action is contained under two species that are disparate, as it were. Consequently we say that he that commits theft for the sake of adultery, is guilty of a twofold malice in one action. On the other hand, if the object be of itself ordained to the end, one of these differences is an essential determination of the other. Wherefore one of these species will be contained under the other.

[¶6] It remains to be considered which of the two is contained under the other. In order to make this clear, we must first of all observe that the more particular the form is from which a difference is taken, the more specific is the difference. Secondly, that the more universal an agent is, the more universal a form does it cause. Thirdly, that the more remote an end is, the more universal the agent to which it corresponds; thus victory, which is the last end of the army, is the end intended by the commander in chief; while the right ordering of this or that regiment is the end intended by one of the lower officers. From all this it follows that the specific difference derived from the end, is more general; and that the difference derived from an object which of itself is ordained to that end, is a specific difference in relation to the former. For the will, the proper object of which is the end, is the universal mover in respect of all the powers of the soul, the proper objects of which are the objects of their particular acts.

[¶7] Reply to Objection 1: One and the same thing, considered in its substance, cannot be in two species, one of which is not subordinate to the other. But in respect of those things which are superadded to the substance, one thing can be contained under different species. Thus one and the same fruit, as to its color, is contained under one species, i.e. a white thing: and, as to its perfume, under the species of sweet-smelling things. In like manner an action which, as to its substance, is in one natural species, considered in respect to the moral conditions that are added to it, can belong to two species, as stated above (Q 1, A 3, ad 3).

[¶8] Reply to Objection 2: The end is last in execution; but first in the intention of the reason, in regard to which moral actions receive their species.

[¶9] Reply to Objection 3: Difference is compared to genus as form to matter, inasmuch as it actualizes the genus. On the other hand, the genus is considered as more formal than the species, inasmuch as it is something more absolute and less contracted. Wherefore also the parts of a definition are reduced to the genus of formal cause, as is stated in Phys. ii, 3. And in this sense the genus is the formal cause of the species; and so much the more formal, as it is more universal.

### I–II · Q. 18, Art. 8: Whether any action is indifferent in its species?

[¶11] Whether any action is indifferent in its species?

[¶12] Objection 1: It would seem that no action is indifferent in its species. For evil is the privation of good, according to Augustine (Enchiridion xi). But privation and habit are immediate contraries, according to the Philosopher (Categor. viii). Therefore there is not such thing as an action that is indifferent in its species, as though it were between good and evil.

[¶13] Objection 2: Further, human actions derive their species from their end or object, as stated above (A 6; Q 1, A 3). But every end and every object is either good or bad. Therefore every human action is good or evil according to its species. None, therefore, is indifferent in its species.

[¶14] Objection 3: Further, as stated above (A 1), an action is said to be good, when it has its due complement of goodness; and evil, when it lacks that complement. But every action must needs either have the entire plenitude of its goodness, or lack it in some respect. Therefore every action must needs be either good or bad in its species, and none is indifferent.

[¶15] On the contrary, Augustine says (De Serm. Dom. in Monte ii, 18) that "there are certain deeds of a middle kind, which can be done with a good or evil mind, of which it is rash to form a judgment." Therefore some actions are indifferent according to their species.

[¶16] I answer that, As stated above (AA 2,5), every action takes its species from its object; while human action, which is called moral, takes its species from the object, in relation to the principle of human actions, which is the reason. Wherefore if the object of an action includes something in accord with the order of reason, it will be a good action according to its species; for instance, to give alms to a person in want. On the other hand, if it includes something repugnant to the order of reason, it will be an evil act according to its species; for instance, to steal, which is to appropriate what belongs to another. But it may happen that the object of an action does not include something pertaining to the order of reason; for instance, to pick up a straw from the ground, to walk in the fields, and the like: and such actions are indifferent according to their species.

[¶17] Reply to Objection 1: Privation is twofold. One is privation "as a result" [privatum esse], and this leaves nothing, but takes all away: thus blindness takes away sight altogether; darkness, light; and death, life. Between this privation and the contrary habit, there can be no medium in respect of the proper subject. The other is privation "in process" [privari]: thus sickness is privation of health; not that it takes health away altogether, but that it is a kind of road to the entire loss of health, occasioned by death. And since this sort of privation leaves something, it is not always the immediate contrary of the opposite habit. In this way evil is a privation of good, as Simplicius says in his commentary on the Categories: because it does not take away all good, but leaves some. Consequently there can be something between good and evil.

[¶18] Reply to Objection 2: Every object or end has some goodness or malice, at least natural to it: but this does not imply moral goodness or malice, which is considered in relation to the reason, as stated above. And it is of this that we are here treating.

[¶19] Reply to Objection 3: Not everything belonging to an action belongs also to its species. Wherefore although an action's specific nature may not contain all that belongs to the full complement of its goodness, it is not therefore an action specifically bad; nor is it specifically good. Thus a man in regard to his species is neither virtuous nor wicked.