Existential graphs: What a diagrammatic logic of cognition might look like

Ahti Veikko Pietarinen*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

29 Citations (Scopus)


This paper examines the contemporary philosophical and cognitive relevance of Charles Peirce's diagrammatic logic of existential graphs (EGs), the 'moving pictures of thought'. The first part brings to the fore some hitherto unknown details about the reception of EGs in the early 1900s that took place amidst the emergence of modern conceptions of symbolic logic. In the second part, philosophical aspects of EGs and their contributions to contemporary logical theory are pointed out, including the relationship between iconic logic and images, the problem of the meaning of logical constants, the cognitive economy of iconic logic, the failure of the Frege-Russell thesis, and the failure of the Language of Thought hypothesis.

Original languageEnglish
Pages (from-to)265-281
Number of pages17
JournalHistory and Philosophy of Logic
Issue number3
Publication statusPublished - Aug 2011

Scopus Subject Areas

  • History
  • History and Philosophy of Science


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