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

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

WE PRESUPPOSE that in the intellect the act of cognizing is distinct from the very object cognized and from the impressed and expressed species. For, as St. Thomas says in q. 8. de Potentia art. 1., four things concur in the intellect for cognition: the thing understood, the intellect's conception, the species by which it understands, and the very act of understanding. The reason is that we must necessarily admit in our intellect some vital operation that proceeds from the intellect informed by a species, since the operation and cognition of the intellect are produced by the object and the power, while the object actualizes the power through a species. Again, this operation formally cannot be the very expressed species, or word, formed by the intellect, because if it is formed by that operation, it is formed through some operation, and consequently the operation is distinct from that expressed species. We call the operation the act of understanding; the expressed species, however, is the term or word said and expressed by that act, insofar as it is an act of saying.

This is further confirmed because understanding is considered either as a saying that expresses, or as pure contemplation and cognition. If as a saying, it is essentially the production of a word, and therefore requires that the word be the term of that production. If as pure cognition, it requires the object to be applied and united to it in immaterial being, not only by way of a principle through which cognition is elicited, but also by way of a term in which the object is attained. The term of cognition, however, is not cognition itself; rather, cognition is a tendency toward the object that is cognized. And because the object is not cognized or terminates cognition according to its real and material being outside, but insofar as it is made spiritual and immaterial within, some intelligible form is required in which the object is made so immaterial and spiritual on the side of the term. This is the expressed species or word. All this will be explained more fully in the book On the Soul, question 10.

Since, then, it has been determined whether the impressed and expressed species are signs, it remains to consider this of the very act of the intellect, which is cognition and a tendency toward the object.

THERE IS, THEN, ONE CONCLUSION: The act of understanding, thus distinct from the impressed and expressed species, is not a formal sign in any operation of the intellect in which it is taken.

This conclusion is against some recent authors, even among Thomists; nevertheless, Capreolus in 4. dist. 49. q. 1. and Ferrariensis in 2. Contra Gent. cap. 49, at the end of the section Ex hoc enim, may seem to support it.

THE REASON IS that a sign is essentially representative, whereas the act of understanding is formally not a representation but an operation and tendency toward an object. Hence, when a habit is generated through such multiplied acts, the generated habit is not representative, but a disposition of the power for eliciting acts like itself. Thus St. Thomas, denying in 1. p. q. 12. art. 2. that there is a representative species of God as he is in himself, grants that there is a light of glory, which is a likeness that strengthens the intellect on the side of the power; thus he denies to the light or habit the account of representation. Therefore the act of understanding is likewise not a representation, because acts are like habits; and if representation belonged to either, it would belong much more to a habit, since it is a permanent reality, than to an act, which is an operation.

This is confirmed because if an act were a representation, it would either be a representation distinct from the expressed species or the same as it. It cannot be the same, since the act of understanding is a reality distinct from the expressed species. If it is distinct, then either it represents the same thing as the word, in which case one of them is superfluous; or it represents something distinct, in which case the same thing would not be cognized through the act of cognition and through its term, which is the word.

Finally, that representation of the act of understanding would be either an impressed or an expressed likeness, since there seems to be no intermediate kind of representation between expressed and impressed. If impressed, it is related as a principle impressed or infused from outside into the intellect. The act of understanding, however, cannot be impressed from outside, but arises from within the intellect, since it is a vital act. If expressed, then it is a word and is related as an expressed and produced term; but here we speak of the act of understanding as distinct from the word.

THE ARGUMENTS ARE RESOLVED.

First it is argued: A formal sign is to be a formal cognition of something belonging to a power by way of representation; but all this belongs to the act of cognizing; therefore it is a formal sign.

The minor is proved. That it is a formal cognition is clear, since it is cognition itself, which is the same as knowledge. That it is by way of representation is proved because it unites the object to the power. For understanding, as St. Thomas says in 1. p. q. 27. art. 1. ad 2., consists in this, that it makes one with the very intelligible thing. But to unite in this way is to make the object it unites present to the power; therefore it is a representation.

This is confirmed because an immanent action is not a formal production, but only a virtual one. Formally, however, it is an act in the genus of quality that concerns an object by tending toward it, not by producing it. Although this tendency does not produce the object, it unites the object to the power and consequently represents it, since to represent is to make present or unite cognitively.

THE ANSWER IS that the act of understanding is not a formal sign because it lacks the account of representing, as we said. To the objection against the contrary, the answer is that the act of understanding unites the object by way of an operation tending toward it, not by way of a form that substitutes for it and takes its place. Therefore it does not have the account of what represents, because representation occurs by containing another thing as taking its place, not by operating. Hence a unitive action is not said to represent, although it unites; not every mode of uniting, then, is a mode of representing. Likewise, an impressed species, because it unites as a principle of cognition, does not unite as something that formally represents.

To the confirmation, the answer is that although the act of understanding is a quality, it does not make the object present as a form held on the side of the object and functioning as if taking its place. Rather, it is on the side of the power, tending and operating upon the object. Therefore this is not a representative union, but an operative one, or a union by way of a second act: not as something containing the object, but as something tending toward it.

Second it is argued: Cognition of an external sense is a formal sign, and yet there is no word or expressed image there, as St. Thomas teaches in q. 8. de Veritate art. 5. and opusculum 14. Therefore an expressed likeness is not required for the account of a formal sign; the act of cognizing suffices.

The major is proved, because otherwise there would be no formal cognition in the external senses, and consequently no formal knowledge, since formal knowledge is a formal sign. Indeed, as Master Soto says in book 1 of the Summulae, chapter 3, cognition of the external senses is a term, insofar as concerns its mode of signifying; but it belongs to the account of a term that it be a sign. Therefore the act of an external sense is a sign, and it is not instrumental; therefore it is formal.

This is confirmed because the act of an external sense is truly an immanent act; therefore it is the ultimate completion and perfection of the power; therefore the ultimate and perfect union with the object occurs in it, and consequently representation also, since there is no other union between external sense and object than through the act.

THE ANSWER IS that it is true that an external sense has no word or expressed image in which it cognizes, because on account of its materiality it does not require such union with the object that the object be within the power; rather, it must be carried to an external thing, which is ultimately made sensible as it exists outside the sense. Although cognition of an external sense is an immanent action, it is not necessarily a production and does not regard a term as changed by it; rather, the term is united intentionally and objectively. Nevertheless, it can virtually have the force of production, just as cognition insofar as it is a saying produces a word, love insofar as it is a breathing forth produces an impulse, and external sensation produces a representation or species, not within itself but in the internal senses, as St. Thomas teaches in 4. Contra Gent. cap. 11. and opusculum 14. In itself, however, an immanent act is not an action by way of motion and a path tending toward a further term, but by way of ultimate actuality, in which the whole cognition is completed. Therefore St. Thomas often compares understanding to existing itself, in 1. p. q. 14. art. 4. and elsewhere.

As for the proof of the argument, it is said that in an external sense there is formal knowledge by way of cognition, which is the power's tendency toward the object, not by way of a representation, which is a form taking the object's place in the power. Thus, although formal sign is called formal cognition terminatively, because it is the term of cognition, not every formal cognition is a formal sign, namely, the very act of cognizing. Nor does Master Soto call cognition of the external sense a term absolutely, but only in a qualified sense, insofar as it is a certain simple cognition.

To the confirmation, the answer is that the act of an external sense is an ultimate completion by way of a second act, in contrast to a transitive action. For, as St. Thomas says in q. 14. de Veritate art. 3., an act of a transitive operation has its completion in a term that comes to be outside the agent; the completion of immanent actions, however, is not taken from what is produced, but from the mode of acting, because the act itself is the perfection and actuality of the power. Hence virtue in these powers is not considered according to the best thing it produces, but according to the operation's being good. So St. Thomas. Nevertheless, although the operation of an external sense is the ultimate perfection uniting the object to the power, it does not do this representatively. As we have often said, it is a union by way of a tendency from the power toward the object, not by way of a form substituting for the object; formal representation, however, is the substitution of that which is represented.

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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