 Although it has usually been supposed that medieval interest in sophismata and insolubilia came from medieval scholars’ exposure to ancient sources, like Arisotle’s Sophistical Refutations, rediscovered in the Middle Ages, Angel D’Ors has suggested that their origins might instead be found in earlier medieval sources concerned with the problem of skepticism, like Augustine’s Soliloquia, and Contra Academicos, as well as Anselm’s De Veritate, Proslogion and so forth (D’Ors 1997). Ashworth ties their origin to the 12th c. practice of adducing counter-examples to point out the flaws in reasoning for an apparently plausible thesis (Ashworth 1992, 518) D’Ors further suggests that discussions of sophisms which continue in theological texts show not the interest in sophisms bleeding over into theology, but theological contexts as the impetus for interest in logical sophisms (D’Ors 1997).