 In addition to claiming that freedom implies subjection to the Categorical Imperative, Kant also holds that moral obligation implies freedom. Throughout the critical writings, Kant argues that “nothing in appearances can be explained by the concept of freedom” (5:30). So he frequently insists that morality “exists in the sensible world [the world as known through the senses and by science] but without infringing on its laws” (5:43). Every action, considered as an event in the world of appearances, must be considered as caused (whether we think of explanations given by neuroscience or physics or perhaps even psychology). Experience of the objective world therefore gives us no warrant for assuming freedom. Instead it is to our consciousness or subjectivity that Kant turns: