Gabriel Vasquez, S.J., 1551-1604, taught at Rome and Aleali, mainly theology, which he has bequeathed to us in a great commentary on the Summa Theologiae of St. Thomas Aquinas, with philosophy interspersed. If Francis Suarez was the Aristotle of the Society of Jesus, Vasquez was the Plato. He and Suarez were rivals in the schools. Vasquez is always good reading, brilliant, suggestive, more lively, too, than Suarez, but less sure-footed. By this time the Summa Theologiae of St. Thomas had replaced the Sentences of Peter Lombard as the text-book in the schools. At the opening of his commentary on the Summa, Vasquez has an interesting defence of scholastic theology against the allegations brought against it in the sixteenth century. Many of his remarks may serve as an apology for scholastic philosophy in our time.