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
Articulus III: Utrum quidquid Deus vult, ex necessitate velit
Articulus IV: Utrum voluntas Dei sit causa rerum
Articulus V: Utrum voluntatis divinae sit assignare aliquam causam
The title is to be understood as it sounds: on the true cause. - In the body there is a single conclusion, answering the question in the negative: The divine will has no cause. - This conclusion is proved and made manifest; and at the same time that which creates difficulty in this matter is preserved, namely: God wills other things for the sake of an end. The proof is as follows. The will, willing by one and the same act both the end and the things ordered to the end, does not have its act of willing caused; therefore the divine will has no cause. - The antecedent is proved: because the same thing is not the cause of itself. And it is made manifest from the opposite case, namely, when we will the end by one act and the things ordered to the end by another. The consequence is proved: because the divine will wills all things in its goodness by one act. The manifestation consists in a proportional likeness between intellect and will with respect to their manner of having or not having a cause. Having one indeed: because an intellect that understands principles and conclusions by different acts has caused knowledge. Not having one: because an intellect that understands principles and conclusions by the same act does not have knowledge of the conclusions caused from the principles; for the same reason, namely, that the same thing is not the cause of itself. Now that which introduces difficulty, namely, that God wills other things for the sake of an end, is preserved first by distinguishing that it is one thing to will other things for the sake of an end, and another to will other things to be for the sake of an end: and that the latter is true, but not the former. Second, by opening this up through an incipient proportionality. For an intellect understanding conclusions and principles by one act does not understand the conclusions from the principles, yet it understands the conclusions to be from the principles: and proportionally this holds in the will. - But the cause of this whole proportionality is touched upon in the text, where it is said, because the will follows the intellect. II. For the clarification of what is said here, and in the response to the third objection, note these four propositions. The first is, this is because of that; the second, God wills this to be because of that; the third, this is willed by God because of that other thing willed by him; the fourth, God wills this because he wills that other thing. Among these there is a manifest difference. For the first speaks of things absolutely; the second, however, of the same things as willed by God with simple will; but the third and fourth seem to include a causality of one volition with respect to another. And as far as appears from this text, these last two seem to be denied, since it is expressly said that God does not will this because of that. III. Truly, if we consider more attentively the intention of the Author, and the response to the third objection, together with the doctrine handed down in I Contra Gentiles, chapters LXXXVI and LXXXVII, then as regards the thing itself it must be said that the act of the divine will attaining this object willed, say the universe or man, on the part of the act lacks a cause, not only as such a being ens is concerned, but also as attaining such an object willed: so that the attaining willing of the divine will with respect to the universe, on the part of the act, is not caused by the attaining willing of the divine will with respect to his own goodness. And this is what he intends when he says that God does not will this because of that. Yet the same act on the part of the thing willed has a cause, so that the passive attainment of one is caused by the passive attainment of the other; that is, the being-willed of one is caused by the being-willed of the other. So that not only is man's being caused in the genus of final cause by the perfection of the universe: but even man's being willed by God is caused by the fact that the universe is willed by God. And if one presses from the passive to the active, the being-willed is caused by the being-willed, therefore the willing is caused by the willing: this inference must be denied. Or else one must distinguish, that such an inference holds when the passive equals the active; but when the action exceeds the passion, so that the action is one while the passions are many, it stands that the passion is caused by a passion without the action being caused. And deservedly: because causing and being caused require diversity; and therefore the unity of the action attaining so many objects willed excludes causality from itself; whereas the multiplication of passions according to the number of things willed does not exclude the causality of one from another. IV. As for the propositions 1, it seems it must be said that not only the first two, but also the third sounds well. For it posits no dependence of the volition on the part of the act, but on the part of the thing willed: and it is expressly said in the passage cited 2 that one thing willed by God is the cause of another's falling under the order of the divine will. The fourth, however, since it signifies dependence on the part of the act, must not be conceded or put into use: but must be devoutly expounded and interpreted on the part of the thing willed, if it is found anywhere. V. From this you also have the difference between the second argument and the third in the text. For the second speaks of the causes of things willed absolutely; the third, however, of the causes of things in relation to the divine will, yet on the part of the thing willed. For example, the first intends that one should not ask why man has hands; the second, that one should not ask why God willed man to have hands. And the former pertains to the first proposition: the latter to the third, properly speaking. - And thus you will understand the responses.