Logic
Dictionary Entry  Posted 08/10/2018 Quote from "Introductory Lecture on the Study of Logic" “Dyalectica,” says the logical textbook of the middle ages, “est ars artium et scientia scientiarum, ad omnium aliarum scientiarum methodorum principia viam habens,” and... 

Article in Journal  Posted 08/10/2018 Peirce, Charles S. (1882). Introductory Lecture on the Study of Logic 

Dictionary Entry  Posted 16/03/2018 Quote from "A Brief Intellectual Autobiography by Charles Sanders Peirce" [Peirce] regards logic as the science of signs in general. 

Dictionary Entry  Posted 15/03/2018 Quote from "A Brief Intellectual Autobiography by Charles Sanders Peirce" Logic […] studies the relation of the phenomenon to the essential character of the phenomenon as controllable, that is, its reasonableness, or embodying an idea. That which... 

Dictionary Entry  Posted 05/03/2018 Quote from "The Regenerated Logic" Logic may be defined as the science of the laws of the stable establishment of beliefs. 

Dictionary Entry  Posted 28/02/2018 Quote from "Logic. The Theory of Reasoning. Part I. Exact Logic. Introduction. What is Logic" Logic proper is the theory of reasoning. That is to say, it is the study which aims to ascertain what must be the perceptible relations between possible facts in order that... 

Dictionary Entry  Posted 28/02/2018 Quote from "Logic. The Theory of Reasoning. Part I. Exact Logic. Introduction. What is Logic" Logic is the Theory of Reasoning. Its main business is to ascertain the conditions upon which the just strength of reasoning depends. 

Manuscript  Posted 28/02/2018 Peirce, Charles S. (1908). The First Part of An Apology for Pragmaticism. MS [R] 296 Robin Catalogue: Pragmaticism, Existential Graph, Teridentity, Universal Algebra of Logic, Logic, Objective Generality, Subjective Generality, Graphinstance, Scholastic Realism, Substance, Dissociation, Prescission, Discrimination, Concept, Form, Algebra of Dyadic Relations, Real, Convention, Feeling, Thought, Sign, Dialogue, Nominalism, Categories


Manuscript  Posted 27/02/2018 Peirce, Charles S. (1897 [c.]). Logic. The Theory of Reasoning. Part I. Exact Logic. Introduction. What is Logic. MS [R] 735 Robin Catalogue: 

Article in Journal  Posted 04/02/2018 Legris, Javier (2017). Peirce’s Diagrammatic Logic and the Opposition between Logic as Calculus vs. Logic as Universal Language In the last century Jaakko Hintikka tried to determine Peirce’s locus within the framework of the “Logic as Calculus vs. Logic as Universal Language” opposition in the history of mathematical logic,...


Monograph  Posted 31/01/2018 Bellucci, Francesco (2018). Peirce’s Speculative Grammar: Logic as Semiotics Peirce’s Speculative Grammar: Logic as Semiotics offers a comprehensive, philologically accurate, and exegetically ambitious developmental account of Peirce’s theory of speculative... 

Article in Journal  Posted 08/10/2017 Hull, Kathleen (1994). Why Hanker After Logic? Mathematical Imagination, Creativity and Perception in Peirce's Systematic Philosophy Focuses on the 'logic of creativity' in Charles Sanders Peirce's philosophy through the wideangle lens of his emerging architectonic. Peirce's distinction between mathematics and...


Article in Journal  Posted 16/09/2017 Brandt, Per A. (1997). How Logic Evolves from Representation: Peirce's Early Semiotics in the First Harvard Lecture Focuses on the ontology of logic conceptualized by philosopher Charles S. Peirce as displayed in the first of his eleven Harvard Lectures. Examination of his psychological and unpsychological...


Article in Journal  Posted 14/09/2017 Byrnes, John (1998). Peirce's FirstOrder Logic of 1885 Analyzes a formal system which captures the calculus presented by Peirce in his book 'On the Algebra of Logic: A Contribution to the Philosophy of Notation.' Aims of Peirce to develop an...


Dictionary Entry  Posted 05/09/2017 Quote from "Adirondack Summer School Lectures" Logic […] is but an application of ethics to thought. For reasoning differs from the formation of a new belief by the action of the association of ideas only be being a deliberate,... 

Dictionary Entry  Posted 24/08/2017 Quote from "On the System of Existential Graphs Considered as an Instrument for the Investigation of Logic" …we may as well consider Logic as the Science of the Nature of Signs, Semeiotic. 

Manuscript  Posted 24/08/2017 Peirce, Charles S. (1906 [c.]). On the System of Existential Graphs Considered as an Instrument for the Investigation of Logic. MS [R] 499(s) Object, Objective Object, Real Object, Dynamical Object, Naïve Interpretant, Rogate Interpretant, Objective Interpretant, Immediate Interpretant, Dynamical Interpretant, Normal Interpretant, Classification of Signs, Thought, Thinking, Pragmatism, Anthropomorphism, F. C. S. Schiller, Logic, Semeiotic, Existential Graph, Abduction, Induction, Deduction, Phaneron, Form, Matter, Natural Classification, Spot, Cyclosis, Chorisis, Loose End, Continuity, Blank, Line of Identity, Continuous Graph, Dissociation, Prescission, Discrimination, Medad, Monad, Pragmaticism


Dictionary Entry  Posted 24/08/2017 Quote from "On the System of Existential Graphs Considered as an Instrument for the Investigation of Logic" …it will be necessary for the present and for a long time to come to regard logic, not as a distinct science, but as only a department of the science of the general... 

Manuscript  Posted 24/08/2017 Peirce, Charles S. (1906 [c.]). On the System of Existential Graphs Considered as an Instrument for the Investigation of Logic. MS [R] 499 Robin Catalogue: 

Dictionary Entry  Posted 24/08/2017 Quote from "On Existential Graphs as an Instrument of Logical Research" …the very kernel of logic consists in the investigation of the validity of arguments, which depend upon their necessary conformity (whether perfect or not) to real facts. Now thinking one way or... 