114 William Heytesbury's Position on "Insolubles": One Possible Source PAUL VINCENT SPADE I n the first chapter of his Regulae solvendi sol5hisniata,l William I Heytesbury sets out his view on the so-called "insolubles"- paradoxes or antinomial sentences such as the famous Liar paradox.2 Heytesbury's position was very influential in the subsequent insolubilia-literature.3 3 In the Prologue to his Regulae, however, Heytesbury denies that the position he maintains in that first chapter is original with him; it was already known when he wrote the Regulae in 1335 . 4 Primum igitur capitulum notam sed non novam de insolubilibus summam declarabit.5 b This disclaimer presents a puzzle. For in fact there is no known treatment of the insolubles that both antedates Heytesbury's chapter, at least so far as we can tell, and also maintains, or even mentions, See William Heytesbury, Tyactatus gulielmi Hentisberi de sensu composito et diviso, Regulae eiusdev? cum sophismatibus, Declayatio Gaetani supra easdem ..., (Venice: Bonetus Locatellus for Octavianus Scotus, 1494 [Hain 8437]). Copy at University of Chicago Library. I am preparing a translation and study of the first chapter of the Regulae. 2 On the early history of the mediaeval discussions of these "insolubles", see my
Vivarium – Brill
Published: Jan 1, 1976
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