Albert of Saxony, «Quaestiones circa logicam»

Albert of Saxony was one of the great logicians of the Middle Ages, on a
par with William Ockham and John Buridan. The Twenty-Five Disputed
Questions on Logic treat of central issues in logic, both then and
now, such as the nature of meaning, of universals, of truth, and of tense
and modality; and the quality and quantity of propositions, the role of
negation, and the relations of contradiction and equivalence between them.
Dr. Fitzgerald has studied Albert's work extensively, and previously
edited the Twenty-Five Disputed Questions from the original
manuscripts. This translation makes available for the first time in
English this careful and exemplary examination of logical notions by an
outstanding medieval thinker.