Marsilius of Inghen (+ 1396) is one of the most intriguing thinkers of the late middle ages. He combines in his writings different intellectual traditions such as Nominalism and Thomism, which he shaped into what came to be known after his death as the via marsiliana. His works on logic and his commentaries on Aristotle were widely used as textbooks at the late medieval universities and his commentary on the Sentences played a significant role in 16th century Spanish scholasticism. This volume explores the thinking of Marsilius from different perspectives. Part 1 examines the background of his philosophy and theology. Part 2 discusses his writings. And Part 3 is devoted to the impact of his thought. The book contains original essays by specialists on the subject, some of which are accompanied by partly editions from the manuscripts of hitherto unpublished works.