Theology and philosophy live as it were on separate planets. They differ from each other not just in species but in “kind” (genus), that is to say, in the most radical way possible. . . . That there should be an abiding tension between them is therefore not surprising. But neither is it something to be simply lamented; for, as has often been suggested, it may be in great part responsible for the extraordinary vitality that Western civilization has demonstrated over the centuries.
— Ernest L. Fortin, A.A.