Commentaria in Primam Partem Summae Theologiae
Tommaso de Vio Cajetan (1469–1534)
First published 1507
Cajetan's Commentaria in Primam Partem Summae Theologiae offers an article-by-article exposition of Aquinas's Prima Pars. Its discussions of sacred doctrine, analogy, divine knowledge, and creation became important reference points in the later Thomist tradition. The present digital edition follows the Latin text of the Leonine edition and includes English and Spanish translations. Coverage is currently partial.
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Praefatio ad Oliverium Carrafam
In Prooemium Summae Theologiae
Quaestio I: De sacra doctrina, qualis sit, et ad quae se extendat
Articulus I: Utrum sit necessarium, praeter philosophicas disciplinas, aliam doctrinam haberi
Articulus II: Utrum sacra doctrina sit scientia
Articulus III: Utrum sacra doctrina sit una scientia
Articulus IV: Utrum sacra doctrina sit scientia practica
Articulus V: Utrum sacra doctrina sit dignior aliis scientiis
Articulus VI: Utrum haec doctrina sit sapientia
Articulus VII: Utrum deus sit subiectum huius scientiae
Articulus VIII: Utrum haec doctrina sit argumentativa
Articulus IX: Utrum sacra scriptura debeat uti metaphoris
Articulus X: Utrum sacra scriptura sub una littera habeat plures sensus
Quaestio II: De Deo, an Deus sit
Articulus I: Utrum Deum esse sit per se notum
Articulus II: Utrum Deum esse sit demonstrabile
Articulus III: Utrum Deus sit
Quaestio III: De Dei simplicitate
Articulus I: Utrum Deus sit corpus
Articulus II: Utrum in Deo sit compositio formae et materiae
Articulus III: Utrum sit idem Deus quod sua essentia vel natura
Articulus IV: Utrum in Deo sit idem essentia et esse
Articulus V: Utrum Deus sit in genere aliquo
Articulus VI: Utrum in Deo sint aliqua accidentia
Articulus VII: Utrum Deus sit omnino simplex
Articulus VIII: Utrum Deus in compositionem aliorum veniat
Quaestio IV: De Dei perfectione
Articulus I: Utrum Deus sit perfectus
Articulus II: Utrum in Deo sint perfectiones omnium rerum
Articulus III: Utrum aliqua creatura possit esse similis Deo
Quaestio V: De bono in communi
Articulus I: Utrum bonum differat secundum rem ab ente
Articulus II: Utrum bonum secundum rationem sit prius quam ens
Articulus III: Utrum omne ens sit bonum
Articulus IV: Utrum bonum habeat rationem causae finalis
Articulus V: Utrum ratio boni consistat in modo, specie et ordine
Articulus VI: Utrum convenienter dividatur bonum per honestum, utile et delectabile
Quaestio VI: De bonitate Dei
Articulus I: Utrum esse bonum Deo conveniat
Articulus II: Utrum Deus sit summum bonum
Articulus III: Utrum esse bonum per essentiam sit proprium Dei
Articulus IV: Utrum omnia sint bona bonitate divina
Quaestio VII: De infinitate Dei
Articulus I: Utrum Deus sit infinitus
Articulus II: Utrum aliquid aliud quam Deus possit esse infinitum per essentiam
Articulus III: Utrum possit esse aliquid infinitum actu secundum magnitudinem
Articulus IV: Utrum possit esse infinitum in rebus secundum multitudinem
Quaestio VIII: De existentia Dei in rebus
Articulus I: Utrum Deus sit in omnibus rebus
Articulus II: Utrum Deus sit ubique
Articulus III: Utrum Deus sit ubique per essentiam, praesentiam et potentiam
Articulus IV: Utrum esse ubique sit proprium Dei
Quaestio IX: De Dei immutabilitate
Articulus I: Utrum Deus sit omnino immutabilis
Articulus II: Utrum esse immutabile sit Dei proprium
Quaestio X: De Dei aeternitate
Articulus I: Utrum convenienter definiatur aeternitas, quod est interminabilis vitae tota simul et perfecta possessio
Articulus II: Utrum Deus sit aeternus
Articulus III: Utrum esse aeternum sit proprium Dei
Articulus IV: Utrum aeternitas differat a tempore
Articulus V: De differentia aevi et temporis
Articulus VI: Utrum sit unum aevum tantum
Quaestio XI: De unitate Dei
Articulus I: Utrum unum addat aliquid supra ens
Articulus II: Utrum unum et multa opponantur
Articulus III: Utrum Deus sit unus
Articulus IV: Utrum Deus sit maxime unus
Quaestio XII: Quomodo Deus a nobis cognoscatur
Articulus I: Utrum aliquis intellectus creatus possit Deum videre per essentiam
Articulus II: Utrum essentia Dei ab intellectu creato per aliquam similitudinem videatur
Articulus III: Utrum essentia Dei videri possit oculis corporalibus
Articulus IV: Utrum aliquis intellectus creatus per sua naturalia divinam essentiam videre possit
Articulus V: Utrum intellectus creatus ad videndum Dei essentiam aliquo creato lumine indigeat
Articulus VI: Utrum videntium essentiam Dei unus alio perfectius videat
Articulus VII: Utrum videntes Deum per essentiam ipsum comprehendant
Articulus VIII: Utrum videntes Deum per essentiam omnia in Deo videant
Articulus IX: Utrum ea quae videntur in Deo a videntibus divinam essentiam per aliquas similitudines videantur
Articulus X: Utrum videntes Deum per essentiam simul videant omnia quae in ipso vident
Articulus XI: Utrum aliquis in hac vita possit videre Deum per essentiam
Articulus XII: Utrum per rationem naturalem Deum in hac vita cognoscere possimus
Articulus XIII: Utrum per gratiam habeatur altior cognitio Dei quam ea quae habetur per rationem naturalem
Quaestio XIII: De nominibus Dei
Articulus I: Utrum aliquod nomen Deo conveniat
Articulus II: Utrum aliquod nomen dicatur de Deo substantialiter
Articulus III: Utrum aliquod nomen dicatur de Deo proprie
Articulus IV: Utrum nomina dicta de Deo sint nomina synonyma
Articulus V: Utrum ea quae de Deo dicuntur et creaturis, univoce dicantur de ipsis
Articulus VI: Utrum nomina per prius dicantur de creaturis quam de Deo
Articulus VII: Utrum nomina quae important relationem ad creaturas, dicantur de Deo ex tempore
Articulus VIII: Utrum hoc nomen *Deus* sit nomen naturae
Articulus IX: Utrum hoc nomen *Deus* sit communicabile
Articulus X: Utrum hoc nomen *Deus* univoce dicatur de Deo per participationem, secundum naturam, et secundum opinionem
Articulus XI: Utrum hoc nomen *qui est* sit maxime nomen Dei proprium
Articulus XII: Utrum propositiones affirmativae possint formari de Deo
Quaestio XIV: De scientia Dei
Articulus I: Utrum in Deo sit scientia
Articulus II: Utrum Deus intelligat se
Articulus III: Utrum Deus comprehendat seipsum
Articulus IV: Utrum ipsum intelligere Dei sit eius substantia
Articulus V: Utrum Deus cognoscat alia a se
Articulus VI: Utrum Deus cognoscat alia a se propria cognitione
Articulus VII: Utrum scientia Dei sit discursiva
Articulus VIII: Utrum scientia Dei sit causa rerum
Articulus IX: Utrum Deus habeat scientiam non entium
Articulus X: Utrum Deus cognoscat mala
Articulus XI: Utrum Deus cognoscat singularia
Articulus XII: Utrum Deus possit cognoscere infinita
Articulus XIII: Utrum scientia Dei sit futurorum contingentium
Articulus XIV: Utrum Deus cognoscat enuntiabilia
Articulus XV: Utrum scientia Dei sit variabilis
Articulus XVI: Utrum Deus de rebus habeat scientiam speculativam
Quaestio XV: De ideis
Articulus I: Utrum ideae sint
Articulus II: Utrum sint plures ideae
Articulus III: Utrum omnium quae cognoscit Deus, sint ideae
Quaestio XVI: De veritate
Articulus I: Utrum veritas sit tantum in intellectu
Articulus II: Utrum veritas sit in intellectu componente et dividente
Articulus III: Utrum verum et ens convertantur
Articulus IV: Utrum bonum secundum rationem sit prius quam verum
Articulus V: Utrum Deus sit veritas
Articulus VI: Utrum sit una sola veritas, secundum quam omnia sunt vera
Articulus VII: Utrum veritas creata sit aeterna
Articulus VIII: Utrum veritas sit imutabilis
Quaestio XVII: De falsitate
Articulus I: Utrum falsitas sit in rebus
Articulus II: Utrum in sensu sit falsitas
Articulus III: Utrum falsitas sit in intellectu
Articulus IV: Utrum verum et falsum sint contraria
Quaestio XVIII: De vita Dei
Articulus I: Utrum omnium naturalium rerum sit vivere
Articulus II: Utrum vita sit quaedam operatio
Articulus III: Utrum Deo conveniat vita
Articulus IV: Utrum omnia sint vita in Deo
Quaestio XIX: De voluntate Dei
Articulus I: Utrum in Deo sit voluntas
Articulus II: Utrum Deus velit alia a se
A clear title. – In the body of the article, two parts: first, he answers the question, that it is so; second, he shows how it is, at the end, there: But himself as end1.
That first, the responsive conclusion is: God wills Himself and other things. – It is proved. Natural things, insofar as they are perfect, are naturally inclined to communicate their good to others; therefore it belongs to the nature of will that one communicate to others the good which one has; therefore this belongs especially to the divine will; therefore God wills Himself and other things.
The antecedent is declared and proved. It is declared, indeed, by distinguishing a twofold inclination of nature: namely, toward its own good, and toward the good of others. It is proved, however, from the effect: because every perfect agent acts so as to produce something like itself. – The first consequence is proved from the proportional likeness between natural inclination and rational inclination, which is the will. – The second, however, is proved: because every perfection is derived from the divine will as something like it, just as a house in timbers is like the house willed by the craftsman. – The third, however, has no need of proof.
II. Concerning this argument there is a doubt. This argument seems to be founded on this: that whatever perfection is found in the inferior must be posited proportionally in the superior. For upon this seems to be founded both the first and the second consequence. The first indeed, because, since the inclination of nature, insofar as it is perfect, tends toward the good of another, it must be granted that an apprehensive inclination also tends toward the good of another. The second also, because if this is found in any will, especially in the divine will, as being most perfect, and which makes things more like itself than any other will, and than any perfect agent whatever; since from it all perfection is derived. But in this argument thus founded lies hidden this false proposition, namely, that God's willing other things is a certain perfection of His will. Therefore the argument is bad. - That this proposition is contained within this argument is clear: because, if the inclination toward the good of another were not supposed to be a perfection, the argument would have no force, therefore it must be posited in the will, and therefore especially in the divine will; for we understand that all things common to God and creatures, such as will and intellect, etc., are transferred to Him with every imperfection removed, as regards what pertains to their being (esse). - But that this proposition is false is clear: because, if God willed nothing other than Himself, He would be equally perfect as He now is; therefore willing other things adds no perfection to Him.
III. To this one may reply in two ways, according to the two senses in which God's willing of other things can be understood: first, that He wills other things actually to be; second, that He wills other things potentially, that is, the being-willed of other things, whether or not He wills other things. And if this conclusion is understood in the second way, there is no ambiguity: for the being-willed of other things is a perfection in God, just as the power to make other things is a perfection of nature. Nor could God fail to have a will directed toward other things, even though He could have refrained from willing them.
If, however, the conclusion is understood also in the first way, it is difficult to solve. Yet what seems to me to be said is this: speaking of the will in general, the consequence is excellent. For love of friendship and liberality, etc., by which we will the goods of others, belong to the perfection of an act of the will; for otherwise such perfection would be lacking to acts of the will. In sign of this, charity is infused into the will: for grace does not change the nature of its subject, but perfects it in the manner of that very nature. Speaking, however, of the divine will, the consequence is good, but the proportionality must be weighed very carefully. If inclination toward the good of others is a perfection of a nature in the manner of a nature, it follows that to be inclined toward the good of others will be a perfection of the will in the manner of the will, that is, voluntary. And if to be inclined toward the good of others in the manner of the will is a perfection of the will; therefore, to be inclined toward the good of others in the manner of the divine will will be a perfection of the divine will. But when you say in the manner of the divine will, you add two limitations to the perfection: one is that it is voluntary; the other is that it is wholly free and dependent, as being conformed to the will of the first nature. Now to concede that God's willing other things is a voluntary and wholly free perfection involves no inconsistency. Nor does it follow from this that some perfection could have been lacking to God, namely, willing other things; but rather that a voluntary and wholly free perfection could have been lacking. For this is a condition diminishing the account of perfection with respect to that in which it is found, since it signifies that its opposite is not an imperfection.
IV. Concerning the same deduction2, indeed even the words of the text, a doubt arises. For from this line of reasoning it seems to follow that God not only wills other things, but that He wills all things He is able to will. And this is expressed in the text, when it is said that it belongs to the divine will to communicate its goodness to others, insofar as this is possible. But this is false: for God could will many things which He does not will, as is evident.
To this it is briefly said that, since God's willing of other things, as will be made clear in the following article, is altogether free and has no cause whatsoever, it cannot be known except after the fact, or from revelation, that God wills other things; and consequently that He wills this or that. Nor was the process of this text made for the purpose of showing this: but for showing that willing other things pertains to the perfection—voluntary, however—of the divine will. But that the divine will wills all things or certain ones, this or those things, is not derived from this, nor can it be. For since voluntary perfection is concluded here, and the divine will is to itself its own law and reason, nothing else can rationally be said on this basis than what is said in the text, namely, that willing other things pertains to it, insofar as it is possible, taking possible from ordained power, and not from power simply. For this amounts to the same as if it were said, insofar as the divine will itself wills.
V. That, according to3, there is a twofold mode in which something is willed: namely as an end, and as ordered to an end. And it is said that God wills himself as an end, and other things as ordered to an end. And it is proved, or made manifest, how each of these is the case, when it is said, inasmuch as it befits the divine goodness that other things also participate in it. For we experience in ourselves that, when we love ourselves perfectly, we not only will ourselves to be, to live, and so on, but we also will for ourselves what befits us: and from this we will to be benefactors, not principally so that we may will good things for others; but, because we will what befits us, the good of others follows. Now, since it befits the divine goodness to be participated in, God wills good things for others because it befits himself, that is, his goodness. And consequently he wills himself as an end, and things other than himself as ordered to an end; because it is on account of himself, in the manner described.
Nor does this diminish the liberality or the love of God toward us, so highly commended; rather it reveals how immense is the lovableness of the divine goodness, and shows that no creature is capable of a lovableness of such a kind. For nothing is less true than that what cannot be loved in that manner is not loved by God. On the contrary, His most liberal love toward us is made manifest when it appears that it befits the divine goodness to be participated in such a way that its opposite would not be unbecoming; so befitting, indeed, that He gains nothing for Himself but confers it on us alone. Hence it is evident that for God to will this fittingness freely is to choose our good: because it is to will His own goodness in such a way that we also may exist. For He could, without any loss to Himself, will it also in such a way that nothing would participate in it, as is clear in the following article.