Henrik Lagerlund

The view of substance defended by William Ockham and John Buridan in the fourteenth century differs radically from the traditional Aristotelian or Thomistic view of substance. Their metaphysical position of substance not only influences the development of natural philosophy, it also changes the preconditions for cognition and epistemology. In this paper I examine the implications of this view on Buridan’s epistemology and particularly on the compatibility of his view of substance with his claim that we have simple (absolute) substance concepts. I conclude that his metaphysics undermines this claim, but I also offer a suggestion for a possible solution to this problem.

: In this paper I argue that the famous problems of dualism between mind (soul) and body, that is, the problems of interaction and unification, concerned philosophers already in a medieval Aristotelian tradition. The problems, although traceable earlier, become particularly visible after William Ockham in the early fourteenth century, and in formulating his own position on the animal and human souls I argue that Buridan realized these problems and laid down the only views on the soul he thought to be possible in an Aristotelian framework. His discussion then sets the stage for the following centuries. In presenting the background to Buridan's discussion I treat Aquinas, Ockham, Walter Chatton and Adam Wodeham

Al-Ghazālī’s Maqāsid al-falāsifa is an intelligent reworking of Avicenna’s Dānesh-name (Book of Science). It was assumed by Latin scholastics that the Maqāsid contained the views of Al-Ghazālī himself. Very well read in Latin translation, it was the basic text from which the Latin authors gained their knowledge of Arabic logic. This article examines the views on the form and matter of the syllogism given in the Maqāsid and considers how they would have been viewed by a Latin reader in the thirteenth century.

In this article, I present two virtually unknown sixteenth-century views of human freedom, that is, the views of Bartolomaeus de Usingen and Jodocus Trutfetter on the one hand and John Mair on the other. Their views serve as a natural context and partial background to the more famous debate on human freedom between Martin Luther and Erasmus of Rotterdam from 1524–1526. Usingen and Trutfetter were Luther’s philosophy teachers in Erfurt. In a passage from Book III of John Mair’s commentary on Aristotle’s Nicomachean Ethics from 1530, he seems to defend a view of human freedom by which we can will evil for the sake of evil. Very few thinkers in the history of philosophy have defended such a view. The most famous medieval thinker to do so is William Ockham. To illustrate how radical this view is, I place him in the historical context of such thinkers as Plato, Augustine, Buridan, and Descartes.