Plato on Parmenides of Elea: the Eleatic PNC case

Authors

DOI:

https://doi.org/10.11606/issn.1981-9471.v18i2p14-31

Keywords:

Plato, Parmenides, Contradiction, Republic , Sophist

Abstract

According to several scholars, the first explicit formulations of the Principle of Non-Contradiction (PNC) can be found in Plato's works, e. g. in the Republic and the Sophist. The paper defends that, in these two dialogues, the context for that is the discussion of possible consequences of Parmenides' Poem, in which Plato seems to have seen a proto-version of the PNC: it is not possible what is not to be (DK28 B7). In that proto-version, the PNC would present itself as an exhaustive disjunction: either it is, and cannot not be, or it is not, and cannot be; and tertium non datur (DK28 B2, B8, passim). The paper shows the problematic corollaries thereof pointed to by Plato in the Republic and the Sophist, as well as it analyses the solutions that he had presented in each dialogue for those problems, namely, his own versions of the PNC.

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Author Biography

  • Andre Luiz Braga da Silva, Universidade Estadual do Norte do Paraná

    André L. Braga da Silva é pesquisador do pensamento grego antigo. Possui Pós-Doutorado (Centre Léon Robin / Sorbonne Université) e Doutorado (Universidade de São Paulo) em Filosofia. Publicou dezenas de artigos sobre filosofia grega nos mais importantes periódicos do meio.

    Representou o Brasil nos últimos congressos da International Plato Society - IPS (Georgia, 2022; Paris, 2019; Brasília, 2016), da International Society for Socratic Studies - ISSS (Houston, 2022; Buenos Aires, 2018) e da International Association for Presocratic Studies – IAPS (Delphi, 2022), das quais é membro ativo.

    Seus artigos sobre o "Parmênides" e o "Sofista" de Platão foram selecionados para publicação nos livros de estudos sobre esses diálogos editados pela International Plato Society (Academia/Nomos Verlag – volume sobre o "Parmênides": 2022; volume sobre o "Sofista": no prelo).

    Em 2022, foi aprovado em 2o. lugar no concurso para Professor de História da Filosofia da Universidade do Estado do Rio de Janeiro (UERJ).

    Em 2023, foi aprovado em 1o. lugar no concurso para Professor de História da Filosofia Antiga e Medieval da Universidade do Estado do Norte do Paraná (UENP).

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Published

2024-10-31

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How to Cite

Silva, A. L. B. da . (2024). Plato on Parmenides of Elea: the Eleatic PNC case. Journal of Ancient Philosophy, 18(2), 14-31. https://doi.org/10.11606/issn.1981-9471.v18i2p14-31