[Revised entry by Graham Macdonald, Ádám Tamás Tuboly, and Nikhil Krishnan on January 14, 2025.
Changes to: Main text, Bibliography]
A.J. Ayer (1910 – 1989) was only 24 when he wrote the book that made his philosophical name, Language, Truth, and Logic (hereafter LTL), published in 1936. In it he put forward what were understood to be the major theses of logical positivism, and so established himself as the leading English representative of the movement, Viennese in origin. In endorsing these views Ayer saw himself as continuing in the line of British empiricism established by John Locke and David Hume, an empiricism whose most recent…

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