Kant’s criticisms between the Groundwork (1785) and the Metaphysics of Morals (1797) do not eradicate perfectionism but transpose it to a new register, the perfection of freedom itself and the conditions of its exercise. Kant’s evocative but incomplete statements of his political position after 1785 elicit numerous debates among Kantians on the basis and limits of state action. Early Kantians view progress as the outcropping of spontaneous freedom, not as administered and imposed. These debates, involving Hufeland, Reinhold, and Humboldt, offer various combinations of Leibnizian and Kantian ideas. In response to Kant’s Groundwork, Hufeland justifies legitimate political constraint through its contribution to systemic perfection. Wilhelm von Humboldt’s early formulation of the limits of state action derives from Kantian anti-paternalism, the Groundwork assertion of the inviolability of rational beings, combined with a modified Leibnizian monadology admitting interaction. His defence of a minimalist state is a possible but not a necessary consequence of Kantian premises. It draws criticism from Karl von Dalberg, who defends Wolffian reformist interventionism.