Cursus Philosophicus Thomisticus, Prima Pars Artis Logicae

John of St. Thomas

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

To the Reader.

Since we seek brevity, it might seem idle to spread out into a tedious preface, especially when the very sentence of the Holy Spirit condemns such a thing in advance: “It is foolish to be diffuse before the history, yet concise in the history itself.” So that we do not impose weariness and a burden on the reader at the very threshold, I would only point out that the aim of our study has been directed toward reducing the discipline of Logic and Philosophy, so far as we can, to a brief and concise method in keeping with the thought of St. Thomas. For this reason, we resolved not only to follow and imitate his solid teaching, but also to emulate his order, brevity, and modesty.

To follow his method and order, at the beginning of the work we divide Logic into two parts. The first comprises the dialectical disputations called the Summulae and concerns logical form. The second, treating predicables, predicaments, and the books of the Posterior Analytics, discusses logical instruments from the side of matter and posterioristic resolution, as we explain more fully at the beginning of this book.

To imitate his brevity, we have taken pains to clear away the vast forest of inextricable questions and the thorny thickets of sophisms, which burdened and stung the minds of students, brought no benefit, and caused considerable loss. We have also sent metaphysical difficulties, and many others from the books On the Soul that had burst into the very cradle of the Summulae in the heat of disputation, to their proper place; and we have treated the discussion of signs and cognitions in Logic on the book On Interpretation. Whenever, in the treatise on the term or elsewhere, we refer readers to Logic, we also indicate the relevant places there. Nevertheless, we could not entirely avoid touching upon some of the most important and necessary difficulties that helped teachers and students explain logical questions. When the reader has seen a chapter of the text, let him seek out the corresponding difficulties in the questions; in this way he will more easily grasp and overcome all the difficulties that arise.

Finally, to engrave modesty—the most pleasing jewel among the angelic virtues of the Holy Doctor—on this little ring, we chose to report, oppose, or follow the opinions of different authors in such a way that we generally abstained from lengthy citations and from naming names. For we publish this work neither to serve controversy nor to indulge a zeal for rivalry, but to serve the search for truth, which attends to doctrines, not persons. We also wished to serve the convenience of our students, for doctrine is more easily instilled when one studies the struggle for truth alone, rather than the contest among authors and authorities. Most kindly reader, we most ardently wish that through this slight but affectionate pen you may attain the truth with interest multiplied many times over. Farewell.

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

Articulus IV: 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 AN INFINITE NAME IS A NAME

Articulus III: WHETHER OBLIQUE CASES ARE RIGHTLY EXCLUDED FROM THE ACCOUNT OF THE NAME

Quaestio III: ON THE VERB

Articulus I: WHAT IT IS TO SIGNIFY WITH TIME AND TO BE ABSOLVED FROM TIME

Articulus II: WHETHER A VERB CAN BE INFINITIZED WITHIN A PROPOSITION

Quaestio IV: ON EXPRESSION AND THE METHOD OF KNOWING

Articulus I: WHETHER THE DEFINITION OF EXPRESSION IS GOOD, AND WHAT IT DEFINES

Articulus II: WHETHER THE DEFINITION OF DEFINITION HAS BEEN RIGHTLY GIVEN

Articulus III: WHETHER THE DEFINITION OF DIVISION AND THE MATTERS PERTAINING TO DIVISION HAVE BEEN RIGHTLY GIVEN

Quaestio V: ON ENUNCIATION

Articulus I: IN WHAT THE ACCOUNT OF ENUNCIATION IN GENERAL CONSISTS

Appendix II: At the end of all the illustrations

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