Cousin's collection, besides giving extracts from the theological work Sic et Non (an assemblage of opposite opinions on doctrinal points, culled from the Fathers as a basis for discussion, the main interest in which lies in the fact that there is no attempt to reconcile the different opinions), includes the Dialectica, commentaries on logical works of Aristotle, Porphyry and Boethius, and a fragment, De Generibus et Speciebus.
Boethius (1751-1810), whose work paved the way for a great idealistic speculative movement headed by B.
It was according to tradition in a tower which, previous to 1584, stood near the church of the Annunziata that Boethius wrote his De consolatione philosophiae; the legal school of Pavia was rendered celebrated in the 11th century by Lanfranc (afterwards archbishop of Canterbury); Petrarch was frequently here as the guest of Galeazzo II., and his grandson died and was buried here.
It takes form as a body of doctrine drawing its premises from authority, sometimes in secular matters from that of Aristotle, but normally from that of the documents and traditions of systematic theology, while its method it draws from Aristotle, as known in the Latin versions,' mainly by Boethius, of some few treatises of the Organon together with the Isagoge of Porphyry.
An old error that we may have a valid syllogism from merely negative premises (ex omnibus negativis), long ago answered by Alexander and Boethius, is now revived by Lotze, Jevons and Bradley, who do not perceive that the supposed second negative is really an affirmative containing a " not " which can only be carried through the syllogism by separating it from the copula and attaching it to one of the extremes, thus: The just are not unhappy (negative).