For the student at any university in late medieval Europe, logic and metaphysics were the necessary preliminaries to any serious engagement with theological questions. Wyclif’s distinctive and controversial theological system relied upon an equally distinctive and impressively intricate philosophical system. His three logical treatises and his Summa de Ente (a modern title) are only now beginning to receive the attention they deserve from scholars, but only one of them (On Universals) is available in English translation. I have here selected texts that deal with a range of issues that were to become crucial to Wyclif’s later thought. All are clearly informed by his developing philosophical realism, and represent his desire to gesture away from the material particulars of the world, towards the universal entities that Wyclif felt were the proper objects of philosophical knowledge.