Part I (Prima Pars) Part 86 (1/2)
(2) Does one angel know another?
(3) Does the angel know G.o.d by his own natural principles?
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FIRST ARTICLE [I, Q. 56, Art 1]
Whether an Angel Knows Himself?
Objection 1: It would seem that an angel does not know himself. For Dionysius says that ”the angels do not know their own powers” (Coel.
Hier. vi). But, when the substance is known, the power is known.
Therefore an angel does not know his own essence.
Obj. 2: Further, an angel is a single substance, otherwise he would not act, since acts belong to single subsistences. But nothing single is intelligible. Therefore, since the angel possesses only knowledge which is intellectual, no angel can know himself.
Obj. 3: Further, the intellect is moved by the intelligible object: because, as stated in _De Anima_ iii, 4 understanding is a kind of pa.s.sion. But nothing is moved by or is pa.s.sive to itself; as appears in corporeal things. Therefore the angel cannot understand himself.
_On the contrary,_ Augustine says (Gen. ad lit. ii) that ”the angel knew himself when he was established, that is, enlightened by truth.”
_I answer that,_ As is evident from what has been previously said (Q. 14, A. 2; Q. 54, A. 2), the object is on a different footing in an immanent, and in a transient, action. In a transient action the object or matter into which the action pa.s.ses is something separate from the agent, as the thing heated is from what gave it heat, and the building from the builder; whereas in an immanent action, for the action to proceed, the object must be united with the agent; just as the sensible object must be in contact with sense, in order that sense may actually perceive. And the object which is united to a faculty bears the same relation to actions of this kind as does the form which is the principle of action in other agents: for, as heat is the formal principle of heating in the fire, so is the species of the thing seen the formal principle of sight to the eye.
It must, however, be borne in mind that this image of the object exists sometimes only potentially in the knowing faculty; and then there is only knowledge in potentiality; and in order that there may be actual knowledge, it is required that the faculty of knowledge be actuated by the species. But if it always actually possesses the species, it can thereby have actual knowledge without any preceding change or reception. From this it is evident that it is not of the nature of knower, as knowing, to be moved by the object, but as knowing in potentiality. Now, for the form to be the principle of the action, it makes no difference whether it be inherent in something else, or self-subsisting; because heat would give forth heat none the less if it were self-subsisting, than it does by inhering in something else. So therefore, if in the order of intelligible beings there be any subsisting intelligible form, it will understand itself. And since an angel is immaterial, he is a subsisting form; and, consequently, he is actually intelligible. Hence it follows that he understands himself by his form, which is his substance.
Reply Obj. 1: That is the text of the old translation, which is amended in the new one, and runs thus: ”furthermore they,” that is to say the angels, ”knew their own powers”: instead of which the old translation read--”and furthermore they do not know their own powers.” Although even the letter of the old translation might be kept in this respect, that the angels do not know their own power perfectly; according as it proceeds from the order of the Divine Wisdom, Which to the angels is incomprehensible.
Reply Obj. 2: We have no knowledge of single corporeal things, not because of their particularity, but on account of the matter, which is their principle of individuation. Accordingly, if there be any single things subsisting without matter, as the angels are, there is nothing to prevent them from being actually intelligible.
Reply Obj. 3: It belongs to the intellect, in so far as it is in potentiality, to be moved and to be pa.s.sive. Hence this does not happen in the angelic intellect, especially as regards the fact that he understands himself. Besides the action of the intellect is not of the same nature as the action found in corporeal things, which pa.s.ses into some other matter.
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SECOND ARTICLE [I, Q. 56, Art. 2]
Whether One Angel Knows Another?
Objection 1: It would seem that one angel does not know another. For the Philosopher says (De Anima iii, text. 4), that if the human intellect were to have in itself any one of the sensible things, then such a nature existing within it would prevent it from apprehending external things; as likewise, if the pupil of the eye were colored with some particular color, it could not see every color. But as the human intellect is disposed for understanding corporeal things, so is the angelic mind for understanding immaterial things. Therefore, since the angelic intellect has within itself some one determinate nature from the number of such natures, it would seem that it cannot understand other natures.
Obj. 2: Further, it is stated in _De Causis_ that ”every intelligence knows what is above it, in so far as it is caused by it; and what is beneath it, in so far as it is its cause.” But one angel is not the cause of another. Therefore one angel does not know another.
Obj. 3: Further, one angel cannot be known to another angel by the essence of the one knowing; because all knowledge is effected by way of a likeness. But the essence of the angel knowing is not like the essence of the angel known, except generically; as is clear from what has been said before (Q. 50, A. 4; Q. 55, A. 1, ad 3). Hence, it follows that one angel would not have a particular knowledge of another, but only a general knowledge. In like manner it cannot be said that one angel knows another by the essence of the angel known; because that whereby the intellect understands is something within the intellect; whereas the Trinity alone can penetrate the mind.
Again, it cannot be said that one angel knows the other by a species; because that species would not differ from the angel understood, since each is immaterial. Therefore in no way does it appear that one angel can understand another.
Obj. 4: Further, if one angel did understand another, this would be either by an innate species; and so it would follow that, if G.o.d were now to create another angel, such an angel could not be known by the existing angels; or else he would have to be known by a species drawn from things; and so it would follow that the higher angels could not know the lower, from whom they receive nothing. Therefore in no way does it seem that one angel knows another.
_On the contrary,_ We read in _De Causis_ that ”every intelligence knows the things which are not corrupted.”
_I answer that,_ As Augustine says (Gen. ad lit. lit. ii), such things as pre-existed from eternity in the Word of G.o.d, came forth from Him in two ways: first, into the angelic mind; and secondly, so as to subsist in their own natures. They proceeded into the angelic mind in such a way, that G.o.d impressed upon the angelic mind the images of the things which He produced in their own natural being. Now in the Word of G.o.d from eternity there existed not only the forms of corporeal things, but likewise the forms of all spiritual creatures. So in every one of these spiritual creatures, the forms of all things, both corporeal and spiritual, were impressed by the Word of G.o.d; yet so that in every angel there was impressed the form of his own species according to both its natural and its intelligible condition, so that he should subsist in the nature of his species, and understand himself by it; while the forms of other spiritual and corporeal natures were impressed in him only according to their intelligible natures, so that by such impressed species he might know corporeal and spiritual creatures.
Reply Obj. 1: The spiritual natures of the angels are distinguished from one another in a certain order, as was already observed (Q. 50, A. 4, ad 1, 2). So the nature of an angel does not hinder him from knowing the other angelic natures, since both the higher and lower bear affinity to his nature, the only difference being according to their various degrees of perfection.
Reply Obj. 2: The nature of cause and effect does not lead one angel to know another, except on account of likeness, so far as cause and effect are alike. Therefore if likeness without causality be admitted in the angels, this will suffice for one to know another.