In this lecture course, Reiner Schürmann develops the idea that, in between the spiritual Carolingian Renaissance and the secular Humanist Renaissance, there was a distinctive Medieval Renaissance connected with the rediscovery of Aristotle. Focusing on Thomas Aquinas&;s ontology and epistemology, William of Ockham&;s conceptualism, and Meister Eckhart&;s speculative mysticism, Schürmann shows how thought began to break free from religion and the hierarchies of the feudal, neo-Platonic order and devote its attention to otherness and singularity. A crucial supplement to Schürmann&;s magnum opus Broken Hegemonies, Neo-Aristotelianism and the Medieval Renaissance will be essential reading for anyone interested in the rise and fall of Western principles, and thus in how to think and act today.