Cursus Philosophicus Thomisticus, Prima Pars Artis Logicae
John of St. Thomas (1589–1644)
First published 1930
Prima pars artis Logicae (formal logic) 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 prima.
Praefatio I: Preface
Praeludium I: IN WHICH THE EXERCISE AND PRACTICE OF DIALECTICAL DISPUTATION ARE PROPOSED
Praeludium II: DIVISION, ORDER, AND NECESSITY OF THE ART OF LOGIC
Liber I: ON THE MATTERS PERTAINING TO THE FIRST OPERATION OF THE INTELLECT
Caput I: DEFINITION OF THE TERM
Caput II: DEFINITION AND DIVISION OF THE SIGN
Caput III: ON CERTAIN DIVISIONS OF TERMS
Caput IV: ON OTHER DIVISIONS OF TERMS
Caput V: ON THE NAME
Caput VI: ON THE VERB
Liber II: ON THE MATTERS PERTAINING TO THE SECOND OPERATION OF THE INTELLECT
Caput I: ON EXPRESSION IN GENERAL AND ITS DIVISION
Caput II: ON THE MODE OF KNOWING
Caput III: ON DEFINITION
Caput IV: ON DIVISION
Caput V: ON ARGUMENTATION
Caput VI: ON THE PROPOSITION OR ENUNCIATION
Caput VII: ON THE DIVISIONS OF THE PROPOSITION
Caput VIII: ON THE MATTER OF PROPOSITIONS
Caput IX: ON THE PROPERTIES OF THE PROPOSITION AND THE ORDER IN WHICH THEY ARE TO BE TREATED
Caput X: ON SUPPOSITION
Caput XI: ON THE DIVISIONS OF SUPPOSITION
Caput XII: RULES OF SUPPOSITION
Caput XIII: ON RELATIVES
Caput XIV: ON AMPLIFICATION, RESTRICTION, AND ALIENATION
Caput XV: ON APPELLATION
Caput XVI: ON OPPOSITION
Caput XVII: ON THE CONDITIONS REQUIRED FOR THE SPECIES OF OPPOSED PROPOSITIONS AND THE RULES FOR RECOGNIZING THE SPECIAL OPPOSITIONS THEMSELVES
Caput XVIII: ON THE EQUIVALENCE OF PROPOSITIONS
Caput XIX: ON THE CONVERSION OF PROPOSITIONS
Caput XX: ON MODALS
Caput XXI: ON THE QUANTITY, QUALITY, OPPOSITION, AND EQUIVALENCE OF MODALS
Rotuli I: TABLES OF COMPOUND MODALS
Rotuli II: TABLES OF DIVIDED MODAL PROPOSITIONS WHOSE DICTUM CONCERNS A COMMON TERM
Caput XXII: ON THE REDUCTION OF MODALS TO THEIR DE INESSE PROPOSITIONS
Caput XXIII: ON HYPOTHETICAL PROPOSITIONS
Caput XXIV: ON EXPONIBLES
Liber III: ON THE THIRD OPERATION OF THE INTELLECT
Caput I: ON CONSEQUENCE AND ITS DIVISION
Caput II: ON INDUCTION
Caput III: ON THE ORDER AND MODE OF RESOLVING TERMS BY ASCENT AND DESCENT
Caput IV: ON THE SYLLOGISM AND ITS MATTER AND FORM
Caput V: ON THE DIVISION OF THE SYLLOGISM ACCORDING TO MATTER AND FORM
Caput VI: ALL THREE FIGURES AND MODES OF SYLLOGISMS ARE EXPLAINED
Caput VII: ON THE REDUCTION OF IMPERFECT SYLLOGISMS TO PERFECT ONES
Caput VIII: ON THE EXPOSITORY SYLLOGISM
Caput IX: ON THE MODE OF FINDING THE MIDDLE TERM
Caput X: ON THE PRINCIPLES ON WHICH THE WHOLE ART OF SYLLOGIZING RESTS
Caput XI: ON THE PRINCIPLES ON WHICH THE GOODNESS OF CONSEQUENCE RESTS UNIVERSALLY
Caput XII: ON THE PRINCIPLES OF THE DEFECTS OF A BAD CONSEQUENCE
Caput XIII: ON PARTICULAR DEFECTS
Circa I: CONCERNING THE SYLLOGISM.
Defectus I: COMMON DEFECTS.
Caput XIV: ON FALLACIES
Liber IV: THE FOLLOWING QUESTIONS ARE TO BE DISPUTED TO ILLUSTRATE CERTAIN DIFFICULTIES OF THIS TEXT
Quaestio I: ON THE TERM
Articulus I: WHETHER DIALECTIC BEGINS WITH THE TERM IN THE RIGHT ORDER OF DOCTRINE
Articulus II: WHETHER THE DEFINITION OF THE ENUNCIATIVE TERM IS GOOD, AND IN WHAT ITS FORMALITY CONSISTS
Articulus III: WHETHER THE DEFINITION OF THE SYLLOGISTIC TERM IS GOOD, AND WHAT ITS FORMALITY IS
Articulus IV: WHAT THE DEFINED THING OF A TERM IS, AND FOR WHAT IT SUPPOSITS
Articulus V: WHETHER WORDS SIGNIFY CONCEPTS OR THINGS FIRST
Articulus VI: WHETHER THE TERM HAS ANY ESSENTIAL DIVISION
Quaestio II: ON THE NAME
Articulus I: HOW THAT CLAUSE IS TO BE UNDERSTOOD: „NO PART OF WHICH SIGNIFIES SEPARATELY”
Articulus II: WHETHER THE INFINITE NAME IS RIGHTLY EXCLUDED FROM THE ACCOUNT OF A NAME
Articulus III: WHETHER THE OBLIQUE CASES ARE RIGHTLY EXCLUDED FROM THE ACCOUNT OF A NAME
Quaestio III: ON THE VERB
Articulus I: WHAT IT IS TO SIGNIFY WITH TIME AND TO BE FREED FROM TIME
Articulus II: WHETHER A VERB CAN BE MADE INFINITE WITHIN A PROPOSITION
Quaestio IV: ON EXPRESSION AND THE MODE OF KNOWING
Articulus I: WHETHER THE DEFINITION OF EXPRESSION IS GOOD AND WHAT ITS DEFINED THING IS
Articulus II: WHETHER THE DEFINITION OF DEFINITION IS RIGHTLY GIVEN
Articulus III: WHETHER THE DEFINITION OF DIVISION AND WHAT PERTAINS TO DIVISION ARE RIGHTLY GIVEN
Quaestio V: ON ENUNCIATION
Articulus I: WHEREIN THE NOTION OF ENUNCIATION CONSISTS, AS IT ABSTRACTS FROM CATEGORICAL AND HYPOTHETICAL ENUNCIATION
Articulus II: WHETHER A CATEGORICAL ENUNCIATION IS SOME SIMPLE QUALITY AND CONCEPT IN THE MIND, OR FORMALLY COMPOSITE
Articulus III: WHETHER THE DIVISION INTO HYPOTHETICAL AND CATEGORICAL IS ESSENTIAL AND UNIVOCAL
Articulus IV: WHETHER THE DIVISIONS INTO AFFIRMATIVE AND NEGATIVE, UNIVERSAL AND PARTICULAR, ARE GOOD AND ESSENTIAL
Quaestio VI: ON SUPPOSITION AND THE OTHER PROPERTIES OF THE PARTS OF AN ENUNCIATION
Articulus I: WHETHER THE DEFINITION OF SUPPOSITION IS GOOD
Articulus II: WHETHER IMPROPER SUPPOSITION IS FOUND IN THE ULTIMATE CONCEPT OF THE MIND
Articulus III: WHAT IS TO BE NOTED CONCERNING THE OTHER SPECIES OF SUPPOSITION AND LOGICAL PROPERTIES
Articulus IV: WHETHER THE RULES OF APPELLATION GIVEN IN THE TEXT ARE TRUE
Quaestio VII: ON THE OPPOSITION AND CONVERSION OF PROPOSITIONS
Articulus I: WHETHER CONTRADICTORY OPPOSITION IS THE GREATEST OF ALL OPPOSITIONS
Articulus II: WHETHER THERE CAN BE CONTRADICTORIES THAT ARE SIMULTANEOUSLY TRUE OR FALSE
Articulus III: WHETHER THE RULES OF CONVERSION ARE RIGHTLY ASSIGNED
Quaestio VIII: ON CONSEQUENCE AND THE SYLLOGISM
Articulus I: WHETHER THE DIFFERENCE BETWEEN GOOD AND BAD CONSEQUENCE IS RIGHTLY ASSIGNED
Articulus II: WHETHER INDUCTION IS A FORMAL CONSEQUENCE
Articulus III: WHETHER THE CONCLUSION BELONGS TO THE ESSENCE OF THE SYLLOGISM, OR ONLY THE PREMISES
Articulus IV: WHETHER THE SYLLOGISM IS RIGHTLY DIVIDED INTO PERFECT AND IMPERFECT
Appendix I: TO THE SECOND PART OF THE SUMMULAE
Quaestio I: ON THE TERM
Articulus I: WHETHER DIALECTIC BEGINS WITH THE TERM IN THE RIGHT ORDER OF DOCTRINE
Articulus II: WHETHER THE DEFINITION OF THE ENUNCIATIVE TERM IS GOOD AND IN WHAT ITS FORMALITY CONSISTS
Articulus III: WHETHER WORDS SIGNIFY CONCEPTS OR THINGS FIRST
On p. 106 b 32.
THE REPLY: The antecedent is denied. In proof of it, the antecedent is granted, because not everything is enumerated there adequately. The consequent is distinguished: “Therefore a spoken word does not signify a thing through a concept as its formal rationale or as its primary and immediate signified,” is granted; for the formal rationale of signifying in a spoken word is imposition, and in a concept it is likeness. “It does not signify a thing through a concept as its principal signifier, of which the spoken word is a substitute and as it were an instrument,” is denied. For a spoken word signifies a concept because it is substituted in its place, to supply what the concept cannot reach, namely, to make it manifest externally both to itself and to others. Thus a spoken word is as it were a substitute representing both its principal, which it serves (the mental word, from which, as St. Thomas says in question 4 of De Veritate, article 1, reply 7,1 it participates in being and signification), and that to which it is ordered, namely, the thing signified. Thus spoken words signify the concept as the principal signifier, but the thing as what is directly signified. Spoken words represent things as conceived specifically and in exercise; that is, the “as” states a condition, for things are represented as conceived, but not by taking “as” reduplicatively to mean the state in which they are known. Spoken words sometimes also signify things as subject to the intention and state they have in the mind. Then the intention itself is as it were the thing represented, as with logical intentions such as species, genus, etc.
For the second proof, etc., p. 107 a 28.
Concerning the second point, namely, what spoken words signify principally, things or concepts, the reply is that they signify principally things, unless perhaps the thing signified is itself a concept or its intention.
THE REASON IS that the concept itself is ultimately and principally ordered to representing the thing itself, of which it is an intentional likeness. Therefore a spoken word, which is only an instrument of the concept in representing and makes the concept itself sensible, will be principally ordered to representing those same things, since it serves the concept precisely for this purpose.
YOU WILL OBJECT, FIRST: An instrument regards its principal, from which it is moved, more than the effect it produces. Therefore, from the fact that a spoken word is an instrument of the concept, it is inferred rather that it signifies the concept principally and the thing less principally, the thing that it makes intelligible or knowable.
The reply distinguishes the antecedent: “An instrument considered in its account of operating and acting” is granted; “in its account of representing” is denied. For a representational instrument, such as a spoken word, has as the principal source of its representation a concept that is also representative of a thing. To manifest that representation to others, the concept substitutes a spoken word for itself; thus the principal signified of both is the thing itself. Hence St. Thomas says in question 9 of De Potentia, article 4,2 that “that is signified formally by a name to which it was principally imposed, just as the name ‘man’ was imposed to signify what is composed of body and rational soul.”
SECOND OBJECTION: The divine Word represents the Father, who is the principle expressing the Word, more principally than creatures, which are things expressed and represented by it. Therefore an external word, or spoken word, will also represent its expressing principle, namely, the concept, more principally than the thing it signifies and expresses.
The first reply is: Let the antecedent pass, and the consequent is denied, because a spoken word is not a natural expression of its principle, as the Word or concept is, but is imposed and principally ordered to signifying that which the concept naturally represents, namely, things. The inference from one case to the other is therefore unsound.
The second reply is that a concept or word represents principally its principal and formal object, because it is an expression of its formal principle, which is the impressed species representing the object of which it is formally the species. In divine things this is the Essence and the Persons. Creatures, however, are a secondary and material object and are therefore not represented principally by the Divine Word. It does not follow from this that an external word, or spoken word, represents the concept more principally, because the concept is not the formal object represented, but the principal signifier of the thing.