Organon F

Volume 29, November 2022, Issue 4, Pages 453–468

ISSN 2585-7150 (online) ISSN 1335-0668 (print)

Research Article

Prior and Tichý’s Concepts of Temporalism

Zuzana Rybaříková


At the beginning of modern logic, propositions were defined as unchangeable entities placed in a certain idealistic realm. These unchangeable propositions contain in themselves so-called indexical, i.e. the place, time and other circumstances of the utterance. This concept of the proposition, which is entitled eternalism, was and is still prevalent among analytic philosophers. Often even the term ‘proposition’ is identified with an idealistic entity located outside the real world. In my paper, I would like to focus on the concept of propositions of two logicians who deviated from the standard understanding of propositions, Arthur N. Prior and Pavel Tichý. They were both proponents of temporalism, i.e. the view that propositions could change their truth-value over time. The paper will discuss the reasons why they were proponents of temporalism and compare their views. It claims that in Prior’s case, his metaphysical views were the main reasons he was a proponent of temporalism. In contrast, when Tichý presented his arguments for temporalism, he focused primarily on natural language.


Temporalism; Eternalism; Arthur Norman Prior; Pavel Tichý; Time; Natural language.

Author(s) and affiliation(s)


Zuzana Rybaříková


Palacký University


Palacký University, Olomouc, Křížkovského 511/8, 779 00 Olomouc, Czech Republic.


About this article


31 August 2022


11 September 2022


11 November 2022


Institute of Philosophy of the Slovak Academy of Sciences

Institute of Philosophy of the Czech Academy of Sciences

Cite as


Rybaříková, Z. (2022). Prior and Tichý’s Concepts of Temporalism. Organon F29(4), 453–468.


Rybaříková, Zuzana. 2022. "Prior and Tichý’s Concepts of Temporalism." Organon F 29 (4): 453–468.


Rybaříková, Z. (2022). Prior and Tichý’s Concepts of Temporalism. Organon F, 29(4), pp. 453–468.

Copyright information

© Zuzana Rybaříková

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