Freedom and Autonomy

Chapters 1 and 2 have done a lot, but they have not done everything. They have shown us what the categorical imperative is, given it multiple formulations, and applied it to cases. What they have not done is show us why we are bound by it. Why should I treat the categorical imperative as authoritative over my action? What makes it a law for me rather than just a curious logical construction?

This is the central question of Chapter 3. If Kant cannot answer it, his whole project fails. He would have shown us what a moral law would look like without showing us that there is any moral law at all.

Kant's answer runs through his account of freedom. His argument, in rough outline, is this. If we are free, then we are bound by the categorical imperative, because the categorical imperative is just what the law of a free will looks like. And we have to regard ourselves as free, at least in practice, whenever we act. So we are committed, just by being agents, to acting as though the categorical imperative binds us. And if it binds us in practice, it binds us morally.

Stated this quickly, the argument sounds easy. It is not. Each of these moves is controversial and technical, and unpacking them is what Chapter 3 tries to do. Think of the rest of this page as a map to the territory.

Kant distinguishes two senses of freedom at the start of Chapter 3, and keeping them straight is essential for the rest.

Negative freedom is freedom from: being independent of the pushes and pulls of external causes, not determined by anything outside yourself. A rational will is negatively free in this sense: when we deliberate and choose, we do so without being forced by some external mechanism.

Positive freedom is freedom to: being subject to laws you give yourself. This is the more striking half of Kant's picture. A free will, he says, is not a lawless will. If it were, it would not be a will at all but just a random outcome. A free will is one that operates according to principles, but principles it generates from itself rather than receives from outside.

Kant gives this positive freedom a name: autonomy. An autonomous will (from the Greek autos, "self," and nomos, "law") is one that is a law unto itself. It acts on principles that originate in its own rational nature rather than in external pressures or internal urges.

Contrast this with what Kant calls heteronomy: being governed by laws that come from somewhere else. A will that acts because of peer pressure is heteronomous. A will that acts because of desire is heteronomous (the desire is "other than" the rational will itself). A will that acts because God has commanded it is heteronomous, if the commanding is what motivates the action rather than the recognition that what is commanded is right.

Kant's claim is that only an autonomous will is a genuinely free will, and that only an autonomous will can be morally good. Acting from duty is acting from the self-given law of reason, which is just another way of saying: acting autonomously.

Kant's connection between freedom and morality depends on our actually being free. If we are not free, the whole argument collapses. And the honest question is whether we are.

Science seems to say we are not. Every event in the natural world, as physics understands it, is caused by prior events in accordance with natural laws. Your brain is a physical object, and its states are caused by prior physical states. If that is true, then your choices are caused by prior states of your brain, which were caused by prior states, and so on back to before you were born. In that picture, what looks to you like free choice is really just the continuation of a long chain of natural causes. You are no freer than a rock falling in accordance with gravity.

This is the classic problem of determinism. Kant takes it seriously. He thinks the scientific picture is accurate: everything we can observe about ourselves in the world of experience is determined by natural causation. He does not try to deny this.

What he denies is that the scientific picture is the whole picture.

Kant's solution is the famous doctrine of the two standpoints. We can view ourselves and the world in two different ways, each legitimate in its own sphere.

The first standpoint is the theoretical or scientific standpoint. From this perspective, we observe ourselves from the outside, as part of the natural world. Physics, chemistry, biology, neuroscience all operate from this standpoint. From here, everything is determined, including us. This is the world of appearances: reality as it shows up to our observational capacities.

The second standpoint is the practical standpoint. This is the standpoint we occupy when we act. When you deliberate about what to do, you are not watching your own brain compute a decision; you are working out what you ought to do and choosing accordingly. From the practical standpoint, we necessarily take ourselves to be free. We could not even deliberate if we thought our deliberation were just another determined event. The practical standpoint is not a view from outside the world; it is the view from inside, as agents.

Kant's claim is that both standpoints are legitimate, and neither refutes the other. The scientific standpoint cannot show that we are not free, because its methods only apply to what appears, not to what we are in ourselves. The practical standpoint cannot show that scientific causation is an illusion, because from within practical deliberation, we have no view of the external order of causes at all.

The upshot is this. Whenever we act, we must regard ourselves as free. This is not an optional assumption; it is built into the structure of agency. A being that did not regard itself as free could not deliberate, could not choose, could not be an agent at all. And to regard ourselves as free is, Kant argues, to regard ourselves as bound by the categorical imperative, because the moral law just is the law of a free will.

Kant is acutely aware that his argument might look circular, and he devotes substantial space in Chapter 3 to worrying about this. The concern: he seems to be saying that morality requires freedom, and freedom requires morality, so the two imply each other. But if they only imply each other, neither is independently justified, and the whole structure hangs in the air.

Kant's response is that the two standpoints dissolve the appearance of circularity. The relationship between freedom and the moral law is not a circular derivation; it is an articulation of what freedom is. A free will is a will that acts on self-given laws. The categorical imperative is just the law a free will gives itself. The two concepts are connected analytically, not by some suspicious inference.

What remains is the question: are we actually free? And here Kant's answer is that we cannot prove we are free from the theoretical standpoint, because from that standpoint everything is determined. But we must presuppose freedom from the practical standpoint, because without that presupposition we cannot act at all. And that practical presupposition is enough to make the categorical imperative binding on us, as long as we are agents.

Honest readers disagree about whether this works. The worry is that Kant has only shown that we have to treat ourselves as free, not that we really are free, and that treating ourselves as free is not enough to make the moral law really binding. Kant thinks treating ourselves as free from the practical standpoint is all that is needed, because morality is a practical matter, not a theoretical one. Whether you find this satisfying depends on your view of what it would take for a moral law to be "really" binding.

You do not need to resolve this debate. The Groundwork ends not with a triumphant proof but with a confession of limits. Kant says we have reached the furthest boundary of all moral inquiry, and that we cannot explain how pure reason can be practical, only that it must be if morality is to make sense at all. He is honest about the fact that his project has reached the limit of what philosophy can show.

Because Chapter 3 is difficult, two video lectures are provided rather than one. Watch both after you have worked through the chapter and this page. The first focuses on the structure of the argument; the second on the details of Kant's solution.

Part 1: Structure of the argument

Part 2: Freedom, autonomy, and the two standpoints