In the Introduction, Hegel addresses the seeming paradox that we cannot evaluate our faculty of knowledge in terms of its ability to know the Absolute without first having a criterion for what the Absolute is, one that is superior to our knowledge of the Absolute. Yet, we could only have such a criterion if we already had the improved knowledge that we seek.

To resolve this paradox, Hegel adopts a method whereby the knowing that is characteristic of a particular stage of consciousness is evaluated using the criterion presupposed by consciousness itself. At each stage, consciousness knows something, and at the same time distinguishes the object of that knowledge as different from what it knows. Hegel and his readers will simply "look on" while consciousness compares its actual knowledge of the object --what the object is "for consciousness" -- with its criterion for what the object must be "in itself". One would expect that, when consciousness finds that its knowledge does not agree with its object, consciousness would adjust its knowledge to conform to its object. However, in a characteristic reversal, Hegel explains that under his method, the opposite occurs.