British, b: 6 November 1901, Seven Sisters, Wales. d: 29 March 1987, Aberystwyth. Cat: Commonsense realist. Ints: Epistemology; history of philosophy; metaphysics. Educ: University College, Cardiff, and Oriel College, Oxford. Infls: John Cook Wilson, H.A. Prichard, W D. Ross and A.C. Ewing. Appts: Lecturer in Philosophy, University College of Swansea; Professor of Philosophy, University College of Wales, Aberystwyth, 1932-69; Visiting Professor of Philosophy, Yale University, 1952-3; Fellow of the British Academy, 1955; Editor of Efrydiau Athronyddol, 1938-68.
There is an incomplete list of Aaron's publications up to 1967 compiled by Sir Ben Bowen Thomas in Efrydiau Athronyddol 32, 1969. There is also a list of publications, manuscripts and typescripts, together with a short biography, tribute and a catalogue of Aaron's library, in The Aaron Philosophy Collection, with an introduction by I.C. Tipton and D. O. Thomas (Dorking: C.C. Kohler, 1987).
Aaron's reputation rests on his contribution to the study of the philosophy of John Locke through his discovery of an early draft of Locke's Essay Concerning Human Understanding and his classic study of Locke's thought, first published in 1937. Aaron's own philosophical preoccupations centred on the topic of universals, where he defended a theory of naturally recurring common qualities, and on the nature of knowledge, where he argued in favour of a form of probable knowledge which is better than fallible opinion, though falling short of infallible knowledge.
Sources: O.R. Jones (1987) obituary notice, PBA 73.
Italian, b: 15 July 1901, Salerno, Italy. Cat: Existentialist. Appts: Taught since 1936 at Turin.
In Abbagnano's earliest work we find a disposition to existentialist modes of thought in opposition to the idealism of Croce and Gentile. This