Cursus Philosophicus Thomisticus, Secunda Pars Artis Logicae

John of St. Thomas

Cursus Philosophicus Thomisticus, Secunda Pars Artis Logicae

John of St. Thomas (1589–1644)

Secunda pars artis Logicae of the Cursus Philosophicus Thomisticus of John of St. Thomas (Joannes a Sancto Thoma), from the Reiser edition (Marietti, Turin, 1930), Reiser tomus I, pars secunda.


Praefatio I: Author's preface to the fourth edition of the second part of the art of Logic

Prooemium I: PROEM

Quaestio I: ON LOGIC: WHAT IT IS AND HOW FAR IT EXTENDS

Articulus I: WHETHER THE ART OF LOGIC IS ABSOLUTELY NECESSARY FOR ACQUIRING THE OTHER SCIENCES

Articulus II: WHETHER LOGIC IS A TRUE SCIENCE AND ART

Articulus III: WHETHER THE FORMAL AND ADEQUATE OBJECT OF LOGIC IS A BEING OF REASON, WHICH IS A SECOND INTENTION

Articulus IV: WHETHER LOGIC IS A SPECULATIVE OR PRACTICAL SCIENCE

Articulus V: HOW LOGIC AS A DOCTRINE IS DISTINGUISHED FROM LOGIC IN USE

Quaestio II: ON LOGICAL BEING OF REASON, WHICH IS A SECOND INTENTION

Articulus I: WHAT A BEING OF REASON IN GENERAL IS, AND HOW MANY KINDS THERE ARE

Articulus II: WHAT A SECOND INTENTION AND A LOGICAL RELATION OF REASON ARE, AND HOW MANY KINDS THERE ARE

Articulus III: WHAT THE DISTINCTION AND UNITY OF REASONED REASON AND REASONING REASON ARE

Articulus IV: BY WHAT POWER AND THROUGH WHICH ACTS BEINGS OF REASON ARE MADE

It is clear that the powers by which a being of reason is made must be powers that operate immanently; for it is evident that powers operating transitively make something existing outside the intellect. Immanent powers, however, are some cognitive and others appetitive. Concerning the appetitive powers, some have said that beings of reason also result from the will, as Scotus does, against whom Cajetan argues, 1. p. q. 28. art. 1. Although Scotus seems to speak of a being of reason not strictly, but insofar as the word “reason” comprises intellect and will, in 3. dist. 26. q. 2. § Resp. Indeed, some extend this to any power, whence an extrinsic denomination results in the object, because they think that a being of reason consists in an extrinsic denomination; we spoke of these in the preceding article. As for the cognitive powers, however, one may doubt, at least concerning the internal senses, such as the imaginative power or phantasia, because they invent and imagine many things that are entirely fictitious beings.

Concerning the act that forms a being of reason, there can also be doubt on two points. First, whether it can be made through an absolute act, such as simple operation, or requires some comparative or compositive act. Second, whether it requires a reflex act by which the very being of reason formed is known as an object known, in order that it may exist; or whether a direct act suffices, by which something that is not a being is known after the likeness of a being.

I SAY FIRST: Neither the will nor the external senses form beings of reason in such a way that they have being by the force of their acts.

The conclusion is certain and is proved by a single REASON: both the will and the external senses do not form their object, but presuppose it as formed outside themselves. Therefore they do not invent something within themselves; rather, if they regard a fictitious object, they presuppose that it was made fictitious and formed by something else.

The antecedent is evident in the will, which presupposes an object proposed through cognition, whether it be true or apparent; therefore the will itself does not make the object, but is directed toward the object proposed. The external senses, however, are directed toward objects placed outside them, not within them; but whatever has being outside the cognitive power is not a being of reason.

Nor is it an objection that the sense seems to be deceived in many things and thus to know fictitiously. For the external sense is not deceived in itself, but is said to be deceived incidentally, because it gives the intellect occasion to be deceived. For example, sight, when seeing orichalcum, is not deceived by judging it to be gold; that judgment belongs to the intellect. Sight, however, apprehends only that appearance of the color of orichalcum, in which there is no falsity or fiction.

I SAY SECOND: The internal senses do not form beings of reason formally speaking, although they can materially represent that after whose likeness some fictitious being is formed, which is to form beings of reason materially.

By “formally speaking” we mean that they do not form them by discerning between a being of reason and a real being, and by conceiving what is not a being after the likeness of a real being. To know a being of reason materially, however, is to reach it but not to discern between what pertains to reason and what pertains to reality. For example, the imaginative power can form a golden mountain, and likewise an animal composed of a goat, lion, and serpent, which is a chimera. But in these cases it reaches only what is sensible, or representable to sense. The internal sense does not reach the fact that these have a relation to nonbeing and are called fictitious beings, or beings of reason, on account of this relation—which is to discern formally between being and nonbeing.

The REASON seems evident, because the internal sense cannot be directed toward anything except under the aspect of something sensible. But it does not pertain to the internal sense to judge that what is represented to it as sensible is opposed to a real being, since it does not conceive being under the aspect of being. To take something as a fictitious being formally consists in knowing that it has no entity in reality and yet in reaching it after the likeness of a being; otherwise one does not discern between a real being and a fictitious being, but only reaches that after whose likeness a being of reason is formed. When that likeness is something sensible, there is no incompatibility in its being known by sense; but sense reaches only what in it is sensible. Its relation to nonbeing, in whose place it is substituted and from which the fictitious thing derives its being, does not pertain to sense. Therefore the internal sense does not discern a fictitious being from a true being under the formal aspect of the fictitious.

That sense can know a fictitious being materially is manifest. This is not because even an external sense can, for example, know a fictitious or apparent color: although this color appears to be a color, it is not a fictitious being, but something true and real, namely, something resulting from light. Rather, it is proved because the internal sense combines many things that in no way are, or can be, outside it. Therefore it knows something that in itself is a fictitious being, although it does not apprehend the fiction itself, but only what presents itself in that fictitious being as sensible. Sense does not perceive the privation of its proper object, such as darkness, by inventing it after the manner of a being, but by not eliciting acts of seeing.

I SAY THIRD: The intellect needs some comparative act in order that beings of reason may be formed and be said to exist formally, and not only fundamentally.

This conclusion is drawn from St. Thomas, 1. Periherm. lect. 10, where he says that “the intellect forms such intentions (he was speaking of universals) insofar as it compares them to things that come to be outside the soul.” And in q. 7. de Potentia art. 11, he says that some relations of reason are those which the intellect finds and attributes to things understood, while others follow the mode of understanding, although the intellect does not invent that mode, but it follows from the mode of understanding. The first relations, indeed, reason discovers by considering the order of what is in the intellect to things outside, or also the order of things understood to one another; the others follow from the fact that the intellect understands one thing in relation to another. Therefore St. Thomas holds that all intentions are formed by some comparing act.

The REASON for the conclusion is that every being of reason is either a relation or some negation. If it is a relation, it must be apprehended comparatively with respect to a terminus. If it is a negation, it must be conceived positively after the likeness of a being, which is comparatively with respect to another. If this negation is conceived absolutely, it is not conceived positively, since it has nothing positive in itself. Therefore it must be conceived after the manner of a being, not only because on the part of the cognitive principle it must be conceived through a real species, but also because on the part of the term known it must be taken after the likeness of a being. This requires some comparative knowledge: for example, when I conceive Rome after the likeness of Toledo, I conceive Rome comparatively and not absolutely, because I conceive it connotatively and with reference to another. So, when I conceive a negation after the likeness of a being, I conceive it not absolutely, but relatively and comparatively. A relation of reason, however, because it is predicated positively in itself and not negatively, requires comparative cognition for another reason: namely, because a relation is a kind of comparison with respect to a terminus, and again because it is conceived after the likeness of a real relation, although it is predicated positively in itself.

By the name “comparative act” we understand not only a compositive or judgmental comparison, which pertains to the second operation, but any cognition that conceives with a connotation and order toward another; this can also occur outside the second operation, as when we apprehend a relation through its order to a terminus. A being of reason can also be made by compositive or discursive comparison. Indeed, because he affirms that blindness is, the Philosopher and St. Thomas prove in 5. Metaph. lect. 9, and often elsewhere, that blindness is a being of reason. Through that enunciation by which something is affirmed of a nonbeing, it is therefore conceived positively as if it were a being, namely, through connotation with the verb “is.”

I said in the conclusion, “in order that beings of reason may be said to exist formally, and not only fundamentally.” For the foundation of a relation of reason does not require this comparison, as is evident when a nature is stripped of individuating conditions by simple abstraction; yet there is no act of comparison there, but only a precision from inferiors. But then the universal is not formally a logical universal, but a metaphysical one, which is the foundation of a logical intention, as will be said below, q. 4.

Hence you will gather that in relations of reason a denomination can occur even before the relation itself is actually known through comparison, solely by positing the foundation. For example, a nature is denominated universal precisely by being abstracted, even before it is actually compared; and the letters in a closed book are a sign even if the relation of sign, which is one of reason, is not actually considered; and God is denominated Lord even if the relation of lordship is not actually considered, but by reason of the power to rule. In this they differ from real relations, because real relations denominate only when they exist: someone is not called a father unless he actually has a relation to a son, nor similar unless he has a likeness, even if he has the foundation. The reason for this is that in relations of reason their actual being consists in their being actually known objectively, which does not come from the foundation and terminus, but from the intellect. Hence many things can be said of a subject by reason of its foundation without a relation resulting, since the relation does not follow the foundation and terminus themselves, but cognition. In real relations, by contrast, since a relation naturally results from the foundation and terminus, nothing belongs by force of the foundation in order to a terminus except through a relation. We understand, however, that this denomination belongs by reason of the proximate foundation, absolutely speaking, but not in every respect: not under the formality by which something is denominated by a relation as known and existing. For God is denominated Lord before the relation, but not as related. This does not occur in real relations, because when no relation exists, they do not denominate in any way with respect to a terminus.

I SAY FINALLY: The cognition that forms a being of reason is not reflexive, looking upon it as a known thing ut quod; rather, that direct cognition which denominates as known, after the likeness of a being or real relation, what is not a real being or is not really relative, is said to form a being of reason, or a being of reason is said to result from it.

The REASON is evident, because such cognition, by which the being of reason itself is denominated as known reflexively and as quod, presupposes a being of reason already formed, since it is directed toward it as toward a known terminus. Therefore such reflexive cognition does not first form it, but presupposes it as formed and, as it were, contemplates the being of reason itself. Hence no denomination results in the knower from intentions known reflexively in this way. Thus, when an angel or God understands a man syllogizing or forming a proposition, God is not thereby said to syllogize or enunciate; yet God understands the syllogism, proposition, and logical intentions themselves as though in a reflex and signate act. The same holds when someone understands these intentions by contemplating their nature: for then the intentions contemplated are not themselves formed, but others are founded upon them, insofar as they are known universally or by way of predication, etc. And so St. Thomas says, Opusc. 42, c. 3, that a being of reason comes to be when the intellect strives to apprehend what is not, and therefore invents it as if it were a being. And in 1. Sentent. dist. 2. q. 1. art. 3, he says that intentions follow “from the mode of understanding a thing outside the soul.” Therefore it is not reflexive cognition, by which a being of reason is simply denominated as known ut quod, but cognition by which what is not is denominated as known after the likeness of a being, that formally and primarily forms a being of reason.

THE ARGUMENTS ARE ANSWERED.

First it is argued: Many powers besides the intellect deal with nonbeings, reaching them and ordering them after the likeness of a real being; therefore they too will form beings of reason.

The antecedent is proved in the will and the internal sense. For the will tends by appetite toward an apparent good that is not good in reality; it also orders one thing to another as a means to an end, which sometimes truly is not a means and is not truly ordered. Therefore it compares one thing with another by a comparison that does not exist in reality, which is to form a being of reason.

Similarly, sense, especially the internal sense, compares one thing with another by forming propositions and discourses concerning singulars, and from diverse species forms a fictitious being, as from gold and a mountain it forms a golden mountain, as St. Thomas teaches, 1. p., q. 12, a. 9, ad 2. Therefore it knows fictitious beings. And generally, from every sense there follows an extrinsic denomination of something as known, which is a being of reason.

IT IS ANSWERED: The antecedent is denied. To the proof, it is answered that the will, since it is directed toward an object known and apprehended, does not formally know it or give it being through cognition; rather, what results from an act of appetite is only some extrinsic denomination, which is indeed a being of reason fundamentally. But when it is actually known after the likeness of a form or real relation, then it exists actually. Therefore the will itself does not invent the apparent good, but presupposes it as known and proposed to it, and so does not form it. The ordering of a means to an end is also proposed to the will by the intellect; the will itself orders by appetition, not by knowing. Such ordering does indeed posit an extrinsic denomination in the thing ordered by the will, but does not formally make it a known being of reason.

As for what is added concerning sense, it is answered that the internal sense compares one thing with another by forming a proposition and discourse in such a way that it does not formally know the ordering of predicate and subject, or of antecedent and consequent, by discerning a fictitious relation from a real one. Similarly, it knows a golden mountain with respect to what is sensible in those parts represented—gold and mountain—but not with respect to the aspect of fiction as distinguished from reality. This is to know not formally what is invented under the aspect of a being, but materially that after whose likeness something is invented, which in itself is not. An extrinsic denomination, moreover, that follows from the cognition of sense, insofar as it is an extrinsic denomination, is not formally a relation of reason, but is so fundamentally; it is formal when it is known after the likeness of a relation.

Second it is argued: The intellect’s simple apprehension also does not compare or discern the aspect of the fictitious from the aspect of a true being, since otherwise it would not be simple apprehension but comparative or compositive with another. Therefore it does not form a being of reason formally speaking, just as the internal senses do not.

And it is confirmed: simple apprehension is not fiction, for fiction is subject to falsity, whereas simple apprehension is always true, because it represents a thing precisely as it is in itself or as it is proposed to it. Therefore its object is not a fictitious being and, consequently, is not a being of reason.

IT IS ANSWERED that simple apprehension does not compare one thing with another by affirming or denying, but it does discern one from another and reach the order of one to another, as when it knows relatives, reaches the definition of a thing and the aptness of terms, and distinguishes the categories. Hence, according to the Philosopher, the treatment of the categories concerns simple apprehension, as St. Thomas says, 1. Periherm. lect. 1, Therefore it has a sufficient comparison to form a being of reason. We do not deny that the internal sense forms a being of reason because it lacks comparison, but because it lacks universality in knowing: it does not know more universal aspects by discerning a true being from a fictitious one, whereas simple apprehension does so, for it discerns the categories from what is not in a category.

To the confirmation, it is said that simple apprehension is not fiction by way of enunciation, affirming or denying, in which fiction consisting in deception or falsity consists; but it can indeed be fiction by way of formation, apprehending something that is not in reality, or an impossible thing, after the manner of a being and discerning it from a true and real being. Hence it does not always apprehend a thing as it is in itself as though it never apprehended anything after the likeness of another, since we apprehend many things through proper concepts, but through connotative ones. Rather, it apprehends a thing as it is in itself—that is, without the addition of composition, by reason of which it is also said that simple apprehension is not false, because it does not formally judge or enunciate, in which alone formal truth or falsity consists. Nevertheless, it can apprehend something that is not after the likeness of what is, without affirming or denying it.

Finally it is argued: A being of reason can also exist without a comparative act; therefore it can also be formed without one.

The antecedent is proved. First, when a proposition or syllogism is formed in the very exercise of reasoning, a second intention results and the proposition itself is denominated as being; yet at that time the relation to its terminus, or its likeness to a real relation, is not comparatively known. Again, when the very being of reason is said to be known reflexively, by this fact it has being as known, since it objectively terminates cognition, which is to exist objectively. Nor is there any reason why a real nature conceived and known in common should be said to exist objectively, while a being of reason known in common should not be said to exist objectively. It is known in common when it is made known reflexively and in a signate act. Finally, the Philosopher in 5. Metaph., and St. Thomas there, lect. 9, say that blindness and every being of reason are said to exist from the fact that the proposition by which we say “Blindness is” is true. But when this proposition is formed, privation is not considered after the likeness of a being, nor is that comparative act performed. Therefore a being of reason exists formally without such an act.

IT IS ANSWERED: The antecedent is denied. To the first proof it is said that when the proposition is formed, the second intention of the proposition is not yet formal, but is proximate fundamentally; just as when a universal nature is abstracted from singulars, there is not yet an intention of universality, but its foundation. Nevertheless, the proposition and syllogism are denominated by the very fact that they are formed in the exercise, just as something metaphysically universal is denominated by the very fact that it is abstracted. For, as we said above, a denomination by a form of reason can also be had from the proximate foundation itself, before the form of reason is formally known and exists.

To the second proof it is said that when a being of reason is known reflexively, it exists objectively as extrinsically denominated in the being of something known, not as first formed. But to terminate cognition as it were extrinsically, and as that upon which cognition falls, is not to be formed under the aspect of a being, but to be presupposed as formed and thus presupposed as denominated by reflexive cognition, which is as it were second, not first, with respect to the being of reason. When a being of reason is known in common, it is not said to be formed, because it is already presupposed as formed; rather, the very universality or commonness under which it is known is formed. When a real nature is known universally, however, it is not the nature itself that is formed, but its universality, which is then first taken after the likeness of a relation, when the object is known relatively with respect to inferiors.

To the final proof it is said that when the proposition “Blindness is” is formed, blindness is considered in the very exercise as existing and, consequently, after the likeness of a real being; and thus at that time it is formally a being of reason, and is then known comparatively both with respect to its predicate and with respect to that after whose likeness it is conceived as existing.

Articulus V: WHETHER GOD FORMS BEINGS OF REASON

Quaestio III: ON THE UNIVERSAL IN ITSELF

Articulus I: THE VARIOUS MEANINGS OF ‘UNIVERSAL’ AND ITS DEFINITION EXPLAINED

Articulus II: WHETHER THE UNIVERSAL TAKEN MATERIALLY AND AS SUBJECT IS FOUND ON THE SIDE OF THE THING

Articulus III: WHETHER FORMAL UNITY, AS DISTINCT FROM THE SINGULAR, BELONGS TO A NATURE BEFORE THE OPERATION OF THE INTELLECT

Articulus IV: WHETHER APTITUDE AND INDIFFERENCE TO MANY BELONG TO THINGS OUTSIDE THE OPERATION OF THE INTELLECT

Articulus V: WHETHER UNIVERSALITY CONSISTS ESSENTIALLY IN A RELATION

Articulus VI: WHETHER METAPHYSICAL DEGREES IN ANY THING ARE DISTINGUISHED BY A MERE DISTINCTION OF REASON OR BY THE NATURE OF THE THING

Quaestio IV: ON THE CAUSE OF THE UNIVERSAL

Articulus I: WHETHER, BY THE BENEFIT OF THE AGENT INTELLECT, THE METAPHYSICAL UNIVERSAL IS REPRESENTED IN THE SPECIES PRODUCED BY THAT INTELLECT

Articulus II: WHETHER THE METAPHYSICAL UNIVERSAL BECOMES ACTUALLY KNOWN THROUGH AN ABSOLUTE ACT OF THE INTELLECT, AND THE LOGICAL UNIVERSAL THROUGH A COMPARATIVE ACT

Quaestio V: ON THE ACT OF THE UNIVERSAL, WHICH IS TO BE PREDICATED OF MANY

Articulus I: WHAT ‘BEING IN MANY’ AND ‘BEING PREDICATED OF MANY’ MEAN IN UNIVERSAL NATURE

Articulus II: WHAT PREDICATION IS AND WHAT IS REQUIRED FOR ITS VERIFICATION

Articulus III: HOW MANY THINGS ARE REQUIRED FOR SOMETHING TO BE CALLED UNIVERSAL OR COMMON

Articulus IV: HOW PREDICATIONS ARE VERIFIED IN SUBSTANTIAL CONCRETE AND ABSTRACT TERMS

Articulus V: HOW PREDICATIONS ARE VERIFIED IN ACCIDENTAL CONCRETE AND ABSTRACT TERMS

Quaestio VI: ON THE DIVISION OF THE UNIVERSAL INTO THE FIVE PREDICABLES

Articulus I: WHETHER THIS DIVISION IS GOOD AND ADEQUATE

Articulus II: WHETHER THIS DIVISION IS A DIVISION OF A GENUS INTO SPECIES AND IS IMMEDIATE

Quaestio VII: ON THE GENUS

Articulus I: WHETHER THE DEFINITION OF GENUS GIVEN BY PORPHYRY IS GOOD

Articulus II: WHAT IS DEFINED IN THE DEFINITION OF GENUS: THE INTENTION ITSELF, THE SUBJECT, OR A COMPOSITE OF BOTH

Articulus III: HOW GENUS IS CALLED A POTENTIAL WHOLE AND IS DERIVED FROM MATTER

Quaestio VIII: ON PREDICABLE AND SUBJECTABLE SPECIES

Articulus I: WHETHER SPECIES IS CONSTITUTED AS SPECIES BY THE CHARACTER OF BEING SUBJECTABLE OR PREDICABLE

Articulus II: THE DEFINITIONS OF SPECIES EXPLAINED

Articulus III: WHETHER THERE CAN BE A SUBJECTABLE SPECIES THAT IS NOT PREDICABLE OF MANY BUT HAS ONLY ONE INDIVIDUAL

Articulus IV: WHETHER SPECIES CAN BE PRESERVED IN ONLY ONE INDIVIDUAL AND GENUS IN ONLY ONE SPECIES

Quaestio IX: ON THE INDIVIDUAL

Articulus I: WHETHER THE DEFINITIONS OF THE INDIVIDUAL ARE RIGHTLY EXPLAINED

Articulus II: WHAT AN INDIVIDUAL IN GENERAL, OR A VAGUE INDIVIDUAL, IS

Quaestio X: ON DIFFERENCE, TAKEN IN GENERAL AND AS THE THIRD PREDICABLE

Articulus I: WHETHER DIFFERENCE IS RIGHTLY DIVIDED INTO COMMON, PROPER, AND MOST PROPER

Articulus II: WHETHER THE DEFINITIONS OF DIFFERENCE AS THE THIRD PREDICABLE ARE GOOD

Articulus III: WHETHER DIFFERENCE IS CALLED UNIVERSAL IN RELATION TO ITS SPECIES OR IN RELATION TO THE INFERIORS OF THAT SPECIES

Articulus IV: WHETHER SUPERIOR AND GENERIC DIFFERENCES ARE INCLUDED IN ATOMIC DIFFERENCES AND PREDICATED OF THEM

Quaestio XI: ON THE PROPER

Articulus I: THE NATURE OF THE PROPER IS EXPLAINED, AND ITS DIVISIONS ARE EXAMINED

Articulus II: WHAT THE FOURTH PREDICABLE PROPER IS AND WITH RESPECT TO WHICH THINGS IT IS TAKEN

Quaestio XII: ON THE FIFTH PREDICABLE, ACCIDENT

Articulus I: WHETHER THE DEFINITIONS AND DIVISIONS OF ACCIDENT WERE RIGHTLY GIVEN BY PORPHYRY

Articulus II: HOW ACCIDENT IS CALLED THE FIFTH PREDICABLE AND WITH RESPECT TO WHICH INFERIORS

Liber I: BOOK OF THE CATEGORIES

Quaestio XIII: ON THE PRE-PREDICAMENTS AND ANALOGUES

Articulus I: WHAT THE PRE-PREDICAMENTS ARE AND WHY ARISTOTLE TREATED THEM HERE

Articulus II: ON THE DEFINITION AND DIVISION OF EQUIVOCALS

Articulus III: WHAT ANALOGY IS AND HOW MANY KINDS THERE ARE

Articulus IV: THE CONDITIONS OF THESE ANALOGUES ARE EXPLAINED

Articulus V: WHETHER IN ANALOGUES THERE IS ONE CONCEPT ABSTRACTED FROM THE INFERIORS

Quaestio XIV: ON PREDICAMENTAL BEING AND ITS DIVISION INTO TEN CATEGORIES

Articulus I: WHAT A CATEGORY IS AND WHAT IS REQUIRED FOR SOMETHING TO BE IN A CATEGORY

Articulus II: WHETHER BEING IS UNIVOCAL OR ANALOGOUS WITH RESPECT TO THE TEN CATEGORIES

Articulus III: BY WHAT ANALOGY BEING IS ANALOGOUS

Articulus IV: WHETHER ACCIDENT IS UNIVOCAL WITH RESPECT TO THE NINE GENERA

Articulus V: WHETHER THE DIVISION INTO TEN CATEGORIES IS ADEQUATE AND GOOD

Quaestio XV: ON PREDICAMENTAL SUBSTANCE

Articulus I: WHAT THE FORMAL CONSTITUTIVE ACCOUNT OF PREDICAMENTAL SUBSTANCE IS

Articulus II: WHETHER SUBSTANCE IS RIGHTLY DIVIDED INTO FIRST AND SECOND

Articulus III: HOW THE DEFINITIONS OF FIRST AND SECOND SUBSTANCE ARE TO BE EXPLAINED

Articulus IV: WHICH THINGS ARE REJECTED AND INCLUDED IN THIS CATEGORY

Articulus V: WHETHER RECEIVING CONTRARIES IS PROPER TO SUBSTANCE IN THE FOURTH MODE

Quaestio XVI: ON QUANTITY

Articulus I: WHAT THE PROPER AND FORMAL ACCOUNT OF QUANTITY IS

Articulus II: WHETHER DISCRETE QUANTITY IS A TRUE SPECIES OF QUANTITY

Articulus III: WHETHER TIME AND MOTION, PLACE AND SPEECH ARE EXCLUDED FROM THE SPECIES OF QUANTITY

Articulus IV: WHETHER LINE, SURFACE, AND BODY ARE TRUE SPECIES OF QUANTITY

Quaestio XVII: ON THE CATEGORY OF RELATION

Articulus I: WHETHER THERE ARE, ON THE PART OF THE THING, RELATIONS THAT ARE INTRINSIC FORMS

Articulus II: WHAT IS REQUIRED FOR A RELATION TO BE PREDICAMENTAL

Articulus III: WHAT THE DIVISIONS OF PREDICAMENTAL RELATION AND ITS SPECIES ARE

Articulus IV: WHETHER RELATION IS DISTINGUISHED FROM ITS FOUNDATION ON THE PART OF THE THING

Articulus V: WHETHER RELATION IS FORMALLY TERMINATED AT THE ABSOLUTE OR THE RELATIVE

Articulus VI: FROM WHAT THE SPECIFIC AND NUMERICAL DISTINCTION OF RELATION IS DERIVED

Articulus VII: HOW THE PROPERTIES OF RELATIVES ARE TO BE EXPLAINED: THAT THEY ARE SIMULTANEOUS BY NATURE AND BY KNOWLEDGE

Quaestio XVIII: ON QUALITY

Articulus I: THE FORMAL ACCOUNT OF QUALITY AND ITS DEFINITION ARE EXPLAINED

Articulus II: THE DIVISION OF QUALITY INTO FOUR SPECIES IS EXPLAINED

Articulus III: HOW EACH OF THE SPECIES IS TO BE EXPLAINED

Quaestio XIX: ON THE SIX LAST CATEGORIES

Articulus I: WHETHER THESE CATEGORIES ARE ABSOLUTE FORMS, RELATIVE FORMS, OR EXTRINSIC DENOMINATIONS

Articulus II: WHAT PREDICAMENTAL ACTION AND PASSION ARE

Articulus III: WHAT THE CATEGORY OF WHERE AND POSITION IS

Articulus IV: WHAT THE CATEGORY OF WHEN AND HAVING IS

Textus I: TEXT FOLLOWING THE CATEGORIES

Quaestio XX: ON THE POST-PREDICAMENTS

Articulus I: OPPOSITIONS ARE EXPLAINED

Articulus II: WHAT SHOULD BE NOTED CONCERNING THE REMAINING POSTPREDICAMENTS

Liber II: ON THE BOOKS ON INTERPRETATION

Quaestio XXI: ON THE SIGN IN ITSELF

Articulus I: WHETHER A SIGN IS IN THE CATEGORY OF RELATION

Articulus II: WHETHER THE RELATION IN A NATURAL SIGN IS REAL OR OF REASON

Articulus III: WHETHER THE RELATION OF A SIGN TO WHAT IT SIGNIFIES AND TO A POWER IS THE SAME

Articulus IV: HOW THE OBJECT IS DIVIDED INTO MOTIVE AND TERMINATIVE

Articulus V: WHETHER TO SIGNIFY IS FORMALLY TO CAUSE SOMETHING IN THE CATEGORY OF EFFICIENT CAUSATION

Articulus VI: WHETHER THERE IS A TRUE CHARACTER OF SIGN IN BRUTES AND EXTERNAL SENSES

Quaestio XXII: ON THE DIVISIONS OF THE SIGN

Articulus I: WHETHER THE DIVISION OF SIGN INTO FORMAL AND INSTRUMENTAL IS UNIVOCAL AND GOOD

Articulus II: WHETHER A CONCEPT IS A FORMAL SIGN

Articulus III: WHETHER AN IMPRESSED SPECIES IS A FORMAL SIGN

Articulus IV: WHETHER AN ACT OF KNOWING IS A FORMAL SIGN

Articulus V: WHETHER THE DIVISION INTO NATURAL, CONVENTIONAL, AND CUSTOMARY SIGNS IS GOOD

Articulus VI: WHETHER A SIGN BY CUSTOM IS TRULY A SIGN

Quaestio XXIII: ON NOTIONS AND CONCEPTS

Articulus I: WHETHER INTUITIVE AND ABSTRACTIVE NOTIONS DIFFER ESSENTIALLY IN THE CHARACTER OF COGNITION

Articulus II: WHETHER THERE CAN BE INTUITIVE COGNITION OF A THING PHYSICALLY ABSENT, EITHER IN THE INTELLECT OR IN EXTERNAL SENSE

Articulus III: HOW A REFLEX CONCEPT DIFFERS FROM A DIRECT ONE

Articulus IV: WHAT SORT OF DISTINCTION THERE IS BETWEEN A ULTIMATE AND A NONULTIMATE CONCEPT

Liber III: ON THE BOOKS OF THE POSTERIOR ANALYTICS

Quaestio XXIV: ON PRECOGNITIONS AND PREMISES

Articulus I: WHAT PRECOGNITIONS AND PRENOTIONS ARE

Articulus II: WHETHER PREMISES EXERT AN EFFICIENT INFLUENCE ON THE CONCLUSION OR IN SOME OTHER KIND OF CAUSATION

Articulus III: WHETHER PREMISES ARE NECESSARY FOR ASSENT TO THE CONCLUSION, SUCH THAT THE MINOR PREMISE IS KNOWN TOGETHER WITH THE CONCLUSION

Articulus IV: WHAT A PER SE AND IMMEDIATE PROPOSITION IS: A PREDICATE OF ALL, PER SE, AND ACCORDING TO ITSELF

Quaestio XXV: ON DEMONSTRATION

Articulus I: WHETHER ARISTOTLE RIGHTLY DEFINED DEMONSTRATION

Articulus II: WHAT IS REQUIRED FOR A PROPOSITION TO BE DEMONSTRABLE

Articulus III: WHETHER EVERY CIRCULAR DEMONSTRATION IS FALLACIOUS

Articulus IV: WHAT DEMONSTRATION ‘THAT’ AND ‘WHY’ ARE, AND WHETHER THIS IS A GOOD DIVISION

Quaestio XXVI: ON SCIENCE BOTH IN ITSELF AND IN RELATION TO OPINION AND FAITH

Articulus I: WHAT SCIENCE IS AND HOW IT IS DISTINGUISHED FROM THE OTHER EVIDENT HABITS

Articulus II: WHAT SUBALTERNATING AND SUBALTERNATED SCIENCES ARE, AND HOW THEY DIFFER FROM EACH OTHER

Articulus III: WHETHER A SUBALTERNATED SCIENCE IS TRULY AND PROPERLY A SCIENCE, EVEN IF IT IS NOT LINKED TO THE SUBALTERNATING SCIENCE

Articulus IV: WHAT THE INEVIDENT HABITS ARE AND HOW THEY DIFFER FROM ONE ANOTHER

Articulus V: WHETHER OPINION AND FAITH ARE INTRINSICALLY INCOMPATIBLE WITH SCIENCE

Quaestio XXVII: ON THE UNITY AND DISTINCTION OF THE SCIENCES

Articulus I: FROM WHAT THE SPECIFIC UNITY OR DIVERSITY OF THE SCIENCES IS DERIVED IN THE CHARACTER OF WHAT IS KNOWABLE

Articulus II: WHETHER SCIENCE IS ONE SIMPLE QUALITY AND HABIT

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