Arthur Prior
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Arthur Norman Prior (1914 Masterton, New Zealand - 1969 Trondheim, Norway) was one of the foremost logicians of the twentieth century. Prior (1957) founded tense logic, now also known as temporal logic, and made important contributions to intensional logic, particularly in Prior (1971).
Prior was entirely educated in New Zealand, where he was fortunate to have come under the influence of John Findlay. Despite knowing only modest mathematics, he began teaching philosophy and logic at Canterbury University College in 1946, filling the vacancy created by Karl Popper's resignation. He became Professor in 1953. Thanks to the good offices of Gilbert Ryle, who had met Prior in New Zealand in 1954, Prior spent the year 1956 on leave at the University of Oxford, where he gave the John Locke lectures in philosophy. During his time at Oxford, he met Peter Geach and William Kneale, influenced John Lemmon, and corresponded with the adolescent Saul Kripke. Logic in the United Kingdom was then in a rather low state, and Prior's enthusiasm is believed to have contributed materially to its revival. From 1959 to 1966, he was Professor of Philosophy at the University of Manchester. From 1966 until his death he was Fellow and Tutor in philosophy at Balliol College, Oxford. His students include Max Cresswell, Kit Fine, and Robert Bull.
Almost entirely self-taught in modern formal logic, Prior published his first paper on logic in 1952, when he was already 38 years of age, shortly after discovering the work of Józef Maria Bocheński and Jan Łukasiewicz, very little of whose work was then translated into English. He went on to employ Polish notation throughout his career. Prior (1955) distills much of his early teaching of logic in New Zealand.
Prior stood out by virtue of his strong interest in the history of logic. He was one of the first English-speaking logicians to appreciate the nature and scope of the logical work of Charles Peirce, and the distinction between de dicto and de re in modal logic. Prior taught and researched modal logic before Kripke proposed his possible worlds semantics for it, at a time when modality and intensionality commanded little interested in the English speaking world, and had even come under sharp attack by Willard Quine.
References
The following books were either written by Prior, or are posthumous collections of journal articles and unpublished papers he wrote.
- 1955, 1962. Formal Logic. OUP.
- 1957. Time and Modality. OUP. based on his 1956 John Locke lectures.
- 1967. Past, Present and Future. OUP.
- 1967. Past, Present and Future. OUP.
- 1968. Papers on Time and Tense. OUP.
- 1971. Objects of Thought. Edited by P. T. Geach and A. J. P. Kenny. OUP.
- 1976. The Doctrine of Propositions and Terms. Edited by P.T. Geach and A.J.P Kenny. London: Duckworth.
- 1976. Papers in Logic and Ethics. Edited by P.T. Geach and A.J.P Kenny. London: Duckworth.
- 1977. Worlds, Times and Selves. Edited by Kit Fine. London: Duckworth.
- 2003. Papers on Time and Tense. New Edition by Per Hasle, Peter Øhrstrøm, Torben Braüner & Jack Copeland. OUP.
The nearest thing to a biography of Prior is:
- Copeland, B. J., 1996, "Prior's Life and Legacy," in his edited volume Logic and Reality: Essays on the Legacy of Arthur Prior. OUP.
Pp. 519-32 of this volume contain a complete bibliography of Prior's known writings as of date.