Our thesis is concerned with the two fundamental problems of the Critique of Pure Reason: the scientific one and the intentional one. While developing an account of judgments of experience and judgments of perception, the thesis points out the overlapping of both problems in Kant’s theoretical philosophy. Taking the intentional problem as a starting point, the paper develops an understanding of synthetic judgments a priori. However, since a discussion of synthetic a priori judgment is closely related to the “Analytic of Principles”, we have placed the Analytic at the centre of our thesis. The text could then be read in two ways: on the one hand, as dealing with the problem of synthetic knowledge a priori in transcendental idealism, or, on the other hand, as an interpretation of the “Analytic of Principles”.