1 Objection 1: It seems that truth does not reside only in the intellect composing and dividing. For the Philosopher says De Anima iii) that as the senses are always true as regards their proper sensible objects, so is the intellect as regards what a thing is. Now composition and division are neither in the senses nor in the intellect knowing what a thing is. Therefore truth does not reside only in the intellect composing and dividing.
1 Ad secundum sic proceditur. Videtur quod veritas non sit solum in intellectu componente et dividente. Dicit enim philosophus, in III de anima, quod sicut sensus propriorum sensibilium semper veri sunt, ita et intellectus eius quod quid est. Sed compositio et divisio non est neque in sensu, neque in intellectu cognoscente quod quid est. Ergo veritas non solum est in compositione et divisione intellectus.
2 Objection 2: Further, Isaac says in his book On Definitions that truth is the equation of thought and thing. Now just as the intellect with regard to complex things can be equated to things, so also with regard to simple things; and this is true also of sense apprehending a thing as it is. Therefore truth does not reside only in the intellect composing and dividing.
2 Praeterea, Isaac dicit, in libro de definitionibus, quod veritas est adaequatio rei et intellectus. Sed sicut intellectus complexorum potest adaequari rebus, ita intellectus incomplexorum, et etiam sensus sentiens rem ut est. Ergo veritas non est solum in compositione et divisione intellectus.
3 On the contrary, the Philosopher says Metaph. vi) that with regard to simple things and what a thing is, truth is found neither in the intellect nor in things.
3 Sed contra est quod dicit philosophus, in VI Metaphys., quod circa simplicia et quod quid est non est veritas, nec in intellectu neque in rebus.
4 I answer that, As stated before, truth resides, in its primary aspect, in the intellect. Now since everything is true according as it has the form proper to its nature, the intellect, in so far as it is knowing, must be true, so far as it has the likeness of the thing known, this being its form, as knowing. For this reason truth is defined by the conformity of intellect and thing; and hence to know this conformity is to know truth.
But in no way can sense know this. For although sight has the likeness of a visible thing, yet it does not know the comparison which exists between the thing seen and that which itself apprehends concerning it. But the intellect can know its own conformity with the intelligible thing; yet it does not apprehend it by knowing of a thing what a thing is. When, however, it judges that a thing corresponds to the form which it apprehends about that thing, then first it knows and expresses truth.
This it does by composing and dividing: for in every proposition it either applies to, or removes from the thing signified by the subject, some form signified by the predicate: and this clearly shows that the sense is true of any thing, as is also the intellect, when it knows what a thing is; but it does not thereby know or affirm truth. This is in like manner the case with complex or non-complex words. Truth therefore may be in the senses, or in the intellect knowing what a thing is, as in anything that is true; yet not as the thing known in the knower, which is implied by the word truth; for the perfection of the intellect is truth as known.
Therefore, properly speaking, truth resides in the intellect composing and dividing; and not in the senses; nor in the intellect knowing what a thing is. And thus the Objections given are solved.
4 Respondeo dicendum quod verum, sicut dictum est, secundum sui primam rationem est in intellectu. Cum autem omnis res sit vera secundum quod habet propriam formam naturae suae, necesse est quod intellectus, inquantum est cognoscens, sit verus inquantum habet similitudinem rei cognitae, quae est forma eius inquantum est cognoscens. Et propter hoc per conformitatem intellectus et rei veritas definitur. Unde conformitatem istam cognoscere, est cognoscere veritatem. Hanc autem nullo modo sensus cognoscit, licet enim visus habeat similitudinem visibilis, non tamen cognoscit comparationem quae est inter rem visam et id quod ipse apprehendit de ea.
Intellectus autem conformitatem sui ad rem intelligibilem cognoscere potest, sed tamen non apprehendit eam secundum quod cognoscit de aliquo quod quid est; sed quando iudicat rem ita se habere sicut est forma quam de re apprehendit, tunc primo cognoscit et dicit verum. Et hoc facit componendo et dividendo, nam in omni propositione aliquam formam significatam per praedicatum, vel applicat alicui rei significatae per subiectum, vel removet ab ea. Et ideo bene invenitur quod sensus est verus de aliqua re, vel intellectus cognoscendo quod quid est, sed non quod cognoscat aut dicat verum.
Et similiter est de vocibus complexis aut incomplexis. Veritas quidem igitur potest esse in sensu, vel in intellectu cognoscente quod quid est, ut in quadam re vera, non autem ut cognitum in cognoscente, quod importat nomen veri; perfectio enim intellectus est verum ut cognitum. Et ideo, proprie loquendo, veritas est in intellectu componente et dividente, non autem in sensu, neque in intellectu cognoscente quod quid est. Et per hoc patet solutio ad obiecta.