In one form or another the concept of the Absolute has played a prominent role in Western philosophy from Plato to Hegel and beyond. The present paper addresses in particular the idea of the Absolute as the completion or perfection of the cognitive project of inquiry into the nature of the real. The discussion first traces the historical development of this conception, and then addresses the question of what sort of constructive role such a concept of cognitive absoluteness can continue to play in philosophical deliberation, arguing that it does indeed afford an instrumentality able to accomplish useful work.