The Philosophical Basis of the Method of Antilogic

Zbigniew Nerczuk


The paper is devoted to the sophistic method of "two-fold arguments" (antilogic). The traditional understanding of antilogic understood as an expression of agonistic and eristic tendencies of the sophists has been in recent decades, under the influence of G.B. Kerferd, replaced by the understanding of antilogic as an independent argumentative technique, having its own sources, essence, and goals. Following the interpretation of G.B. Kerferd, according to which the foundation of the antilogic is the opposition of two logoi resulting from contradictions or opposites, necessarily associated with contradictory character of the sensual world, in the paper it is argued that the philosophical basis of antilogic should be sought in the presentation of the views attributed to Protagoras and "adherents of flux" in Plato's dialogue Theaetetus.


Sophistic Movement; Protagoras; antilogic

Buchheim T.: Die Sophistik als Avantgarde normalen Lebens. Hamburg 1986.

Cornford F.M.: Plato’s Theory of Knowledge, The Theaetetus and the Sophist of Plato Translated with a Running Commentary. London 1935.

Diels H., Kranz W. Eds.: Die Fragmente der Vorsokratiker. Griechisch und Deutsch von Hermann Diels. Herausgegeben von Walther Kranz, vol. I—III. 13th ed. Dublin—Zürich 1969.

Dupréel E.: Les Sophistes. Protagoras, Gorgias, Prodicus, Hippias. Neuchâtel 1948.

Emsbach M.: Sophistik als Aufklärung: Untersuchungen zu Wissenschaftsbegriff und Geschichtsauffassung bei Protagoras. Würzburg 1980.

Gagarin M.: Probability and Persuasion: Plato and Early Greek Rhetoric. In: Persuasion: Greek Rhetoric in Action. Ed. I. Worthington. London—New York 1994.

Gogos G.: Aspekte einer Logik des Widerspruchs. Studien zur griechischen Sophistik und ihrer Aktualität. Tübingen 1998.

Hegel G.W.F.: Vorlesungen über die Geschichte der Philosophie, vol. 1. Berlin 1883.

Kennedy G.A.: The Art of Persuasion in Greece. Princeton 1963.

Kerferd G.B.: The Sophistic Movement. Cambridge 1981.

Lange F.A.: Geschichte des Materialismus und Kritik seiner Bedeutung in der Gegenwart. Leipzig 1887.

Lee M.: Epistemology after Protagoras: Responses to Relativism in Plato, Aristotle, and Democritus. Oxford 2005.

Marrou H.-I.: A History of Education in Antiquity. Trans. G. Lamb. New York 1964.

Mendelson M.: Many Sides: A Protagorean Approach to the Theory, Practice and Pedagogy of Argument. Dordrecht—Boston—London 2002.

Morgan T.J.: Literate Education in Classical Athens. “The Classical Quarterly New Series” 1999, vol. 49, no. 1, pp. 46—61.

Nehamas A.: Eristic, Antilogic, Sophistic, Dialectic: Plato’s Demarcation of Philosophy from Sophistry. In: Virtues of Authenticity. Essays on Plato and Socrates. Princeton—New Jersey 1999, pp. 108—122.

Nerczuk Z.: Der Mensch als Mass aller Dinge. In: Philosophische Anthropologie in der Antike. Eds. L. Jansen, Ch. Jedan. Frankfurt—Paris—Lancaster—New Brunswick 2010, pp. 69—98.

Nerczuk Z.: Koncepcja „zwolenników zmienności” w Platońskim Teajtecie i jej recepcja w myśli greckiej. “Archiwum Historii Filozofii i Myśli Społecznej” 2016, vol. 61, pp. 29—40.

Nerczuk Z.: Metoda ‘dwu mów’ w świetle świadectw przedplatońskich. “Studia Antyczne i Mediewistyczne” 2012, vol. 45, no. 10, pp. 37—50.

Nerczuk Z.: Miarą jest każdy z nas. Projekt zwolenników zmienności rzeczy w platońskim Teajtecie na tle myśli sofistycznej. Toruń 2009.

Nerczuk Z.: References to Plato’s “Theaetetus” in book G (IV) of Aristotle’s Metaphysics. In: Thinking Critically: What Does it Mean?, The Tradition of Philosophical Criticism and Its Forms in the European History of Ideas. Ed. D. Kubok. Berlin—Munich—Boston 2017, pp. 65—72.

Reale G.: Historia filozofii starożytnej. Vol. 1. Od początków do Sokratesa, 5 vols. Lublin 1993.

Robin L.: Greek Thought and the Origins of the Scientific Spirit. New York 1996.

Robinson R.: Plato’s Earlier Dialectic. Ithaca—New York 1941.

Schiappa E.: Protagoras and Logos: A Study in Greek Philosophy and Rhetoric. Columbia (South Carolina) 2003.

Striker G.: Methods of Sophistry. In: Essays on Hellenistic Epistemology and Ethics. Cambridge 1996, pp. 3—21.

Ueberweg F.: Grundriss der Geschichte der Philosophie des Alterthums. Berlin 1876.

Walters F.D.: Gorgias as Philosopher of Being: Epistemic Foundationalism in Sophistic Thought. “Philosophy and Rhetoric” 1994, vol. 27, no. 2, pp. 143—155.

Wieland W.: Zur Problemgeschichte der formalen Logik. In: Sophistik. Ed. C.J. Classen. Darmstadt 1976, pp. 248—253.


Published : 2019-12-28

NerczukZ. (2019). The Philosophical Basis of the Method of Antilogic. Folia Philosophica, 42, 5-19.

Zbigniew Nerczuk
Nicolaus Copernicus University in Toruń  Poland

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