This paper proposes a reading of Kelsen’s basic norm based on Kant’s regulative ideas. I begin by exposing Kant’s conception of the principles of reason. Then I criticize an interpretation of the basic norm along the same lines made by Stanley Paulson. Thirdly I analyze two theses from Hermann Cohen that influenced Kelsen greatly and reinforce my stance on the basic norm. Lastly, I explain how the Kelsenian tenet that the basic norm is the transcendental grounding of the normativity of (...) law can be comprehended based on the role the ideas of reason play in the systematization of knowledge. (shrink)