This volume contains 14 studies on various aspects of Duns Scotus' philosophy. Duns Scotus (ca. 1265-1308/9) is one of the most important philosophers of the Middle Ages. His radical conception of contingency means a break in the history of thought. Despite his importance, he has not yet been studied very much. The contributors to the volume discuss a.o. Duns' view on will and intellect, on the law of nature, on man, and on aspects of his logic and metaphysics.