Published 13-01-2025
Keywords
- Tense-logic,
- Modal logic,
- time
How to Cite
Copyright (c) 2025 Logic and Philosophy of Time

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Abstract
A.N. Prior (1914-69) presented his tense-logic for the very first time at the New Zealand section of the Australasian Association of Psychology and Philosophy, Second Philosophical Congress, Wellington 27th – 30th August, 1954. He introduced his ideas as a new and important approach to the discussion of basic aspects of time. It is, in fact, remarkable that Prior was able to write such an important paper at this time of his life. He had to face several challenges mainly due to TB in the family. However, this also makes it possible to follow several of his considerations since he wrote about all of it in his many letters to his wife Mary, who was then at the sanatorium with TB. We present a selection of the letters along with the presidential address itself.