human reason, not to prove faith but to make clear (manifestare) whatever else is set forth in this doctrine.” This means that human reason can never hope to furnish direct proof of such articles of faith . . . but that it can, and does, elucidate or clarify these articles. . . Manifestatio , then, elucidation or clarification, is what I would call the first controlling principle of Early and High Scholasticism. . . if faith had to be “manifested” through a system of thought complete and self-sufficient within its own limits yet setting itself apart from the realm of revelation, it became necessary to “manifest” the completeness, self-sufficiency, and limitedness of the system of thought. And this could be done only by a scheme of literary presentation that would elucidate the very processes of reasoning to the reader’s imagination just as reasoning was supposed to elucidate the very