The sophistical school, according to Bacon, corrupted natural philosophy by their logic. It is one of the thirteen fallacies originally identified by Aristotle in "Sophistical Refutations". Ockham and Scotus wrote commentaries on the "Categories" and "Sophistical Refutations". Medieval interest may have been inspired by a passage in the "Sophistical Refutations" of Aristotle. Aristotle's "Sophistical Refutations" ("De Sophisticis Elenchis") identifies thirteen fallacies. In particular, Al-Himsi translated Aristotle's Sophistical Refutations and "Physics" into Arabic.