Remarks about Kants transcendental aesthetics

In my short paper I consider the source and status of the Kantian distinction between thinking and perceiving. I find it quite problematic, as other philosophers have and probably unlike Kant himself. That is, it is apparently evident, unprovable in Kant’s system, and based on common sense rather than on philosophical scrutiny. I believe that my analysis, first and foremost, might help to understand the famous analytic-synthetic opposition, which is certainly fundamental for Kant’s "Transcendental aesthetics".