The article offers an analysis of Kant’ s “Third Antinomy of Pure Reason” (in which he examines the possibility of reconciling Transcendental freedom with natural Determinism), in order to show the lack of grounds of the interpretation that claims that the critical resolution of the antinomy implies a shift with respect to the cosmological terms in which the conflict was initially stated. Through a detailed analysis of the sources, we will suggest that the conflict analyzed in the Third Antinomy is (...) not exclusively cosmological, but rather that it also –and to the same degree– constitutes a practical conflict, and, secondly, that the critical solution is not developed in exclusively practical terms, but that it also involves certain aspects directly linked to the cosmological question initially formulated. (shrink)