According to Immanuel Kant, the urge to philosophize is universal: “In all men, as soon as their reason has become ripe for speculation, there has always existed and will always continue to exist some kind of metaphysics.” The truth of this is apparent in children at any early age, whose questions exhaust even the most profound and patient of parents. But it does not follow that there must inevitably be a place for philosophy in our educational systems. It is rare in the United States, for instance, to encounter philosophy before college, and rare outside Catholic universities for philosophy to be required in college. (It was a pleasant feature of a recent year spent living in Morocco to find that almost everyone there, from pharmacists to cab drivers, had a basic grasp of what philosophy is, acquired from their high school days. In this country, in contrast, even well-educated people often have little idea of what philosophy actually consists.) At the university, we think of philosophy as an essential offering in the humanities. But there is nothing inevitable even about this, as reflection on the history of the subject reveals.Philosophy, as it is generally studied in the modern university, springs from ancient Greece and the writings of Plato and Aristotle. The various famous ancient schools long thrived during the Hellenic and Roman eras, but then slowly faded away during the sixth century CE. There followed several centuries of darkness—a true Dark Ages, as much as medievalists dislike the phrase—until philosophical forms of thought began to reemerge in the ninth century. Around the same time, one finds distinct and quite independent philosophical movements afoot in Byzantium, in Latin Western Europe, and in the Islamic world. In time, the Latin tradition would become ascendant, as fostered within the European university and eventually reinvigorated by the Enlightenment and the rise of modern science.