Criticisms of Kant
Kant: Criticisms
Hegel’s criticism
- Kant’s moral law is too rigid.
- Truth should not be spoken in absolutely every case (the murderer-at-the-door example).
Universality of maxims
- Critics deny that all maxims are universal in practice.
- Moral intuition sometimes overrides a maxim (psychotic killer asking about a friend).
Baeir on guilt morality
The excessive use of shame and contempt forces children into a guilt morality rather than a true moral life.
Sartre on duty conflicts
How does one morally choose between conflicting duties? Duty to country versus duty to parents, for example.
Conflict between duty and emotions
Kant rejects emotional decisions but recognises that guilt and shame (emotions) push us toward moral decisions. The position is in tension.
Impracticality of the moral law
Critics point out that Kant’s moral law tells you to “be moral” but does not help with concrete dilemmas.
Public education
Despite criticisms about state-trained subjects, Kant remained in favour of public education.
Every major philosopher attracts criticism. Kant, who shaped European thought for two centuries, has attracted more than most. The criticisms collected here are not idle objections; they are the points on which serious thinkers have argued back against Kant for two hundred years. Knowing them is part of knowing Kant.
Hegel’s criticism
G.W.F. Hegel, the German philosopher who came shortly after Kant, was both a student and a critic of Kant’s system. Hegel’s criticism of Kant’s moral philosophy is one of the most famous in the history of ethics.
Hegel argued that the perfect picture of a moral individual that Kant painted was too formal. Kant’s moral person is consistent, principled, and absolute. But moral life, Hegel said, is messier than this. Real moral situations involve competing goods, partial information, social context, and historical change. Kant’s formal moral law floats above all of this and tells the person to act on universal principles regardless. Hegel thought this was too abstract.
The most famous version of this criticism is what Kant called the duty to tell the truth. Kant said truth should be spoken no matter what, even in life and death situations. The famous case: if a murderer comes to your door asking where your friend is hiding, must you tell the truth? Kant said yes. Hegel said this is a reductio ad absurdum: a moral law that requires you to send your friend to their death is not a moral law worth following.
The criticism does not destroy Kant’s whole system. It does demand a more sophisticated version of his moral law: one that can accommodate competing duties and real-world complexity. Most modern Kantians try to provide such versions.
Too rigid and formal
The perfect moral individual Kant paints is too consistent, principled, and absolute. Real moral life involves competing goods, partial information, and changing context. Kant’s moral law floats above the mess and tells the person to act on universal principles regardless. The murderer-at-the-door case is the famous example.
The universality of maxims
A related criticism. Kant’s theory rests on the assumption that all maxims are universal. But critics point out that in practice, this is not so. Moral intuition sometimes correctly overrides a maxim.
The standard example is the psychotic killer. Suppose someone with the clear intention of murder asks about a friend hiding in your home. Your maxim of truth-telling says you must tell the truth. Your moral intuition says you must lie to save your friend. Most people, on reflection, agree the intuition is right and the maxim has to bend.
If even one well-supported case shows a maxim bending, the maxim cannot be truly universal in Kant’s sense. The universality has exceptions, and exceptions undermine the universality. Critics argue this is not an isolated case but the general truth about most moral rules: they hold in most cases but have legitimate exceptions.
Kant’s defenders try to handle the case by drawing finer distinctions. Maybe the “truth-telling” maxim should be reformulated as something more specific. Maybe there is a higher principle of “do not aid murder” that the truth-telling maxim falls under. The debate is alive and technical. The core point: the strict universality Kant claimed has been hard to defend in concrete cases.
They are not really universal in practice
The standard example: a psychotic killer asks where your friend is hiding. Your maxim of truth-telling says tell the truth; your moral intuition says lie to save your friend. If even one well-supported case shows a maxim bending, the strict universality cannot hold.
Baeir on guilt morality
Annette Baeir, a twentieth-century philosopher, criticised Kant on a different angle. She argued that Kant’s excessive use of shame and contempt forces children into a guilt morality rather than a true moral life.
The criticism turns on what kind of inner state is being produced. A guilt morality is one in which the person acts well primarily because of fear of feeling bad afterwards. Guilt is the emotional driver. The person’s moral life runs on the avoidance of self-reproach.
A true moral life, in Baeir’s view, is one in which the person acts well because of positive engagement with what is good. The driver is care, love, commitment, not the avoidance of guilt. This kind of moral life is more reliable, less self-focused, and harder to manipulate.
If Kant’s pedagogy of shame and contempt produces guilt morality rather than true moral life, then it has missed its own target. Kant wanted to produce free, rational moral agents. He may instead have been producing morally anxious people who behave well to avoid their own self-condemnation. The criticism is significant and not easy to dismiss.
The use of shame and contempt produces guilt morality, not true moral life
A guilt morality runs on avoidance of feeling bad. A true moral life runs on positive engagement with the good. Kant’s pedagogy of shame and contempt may produce the first when he wanted the second.
Sartre on duty conflicts
Jean-Paul Sartre, the twentieth-century French existentialist, criticised Kant’s insistence on duty. The criticism is direct: how does one morally choose between conflicting duties?
Sartre’s famous example: a young French man during World War II is torn between his duty to his country (join the Resistance) and his duty to his mother (stay home and care for her). Both duties are real. Both have Kantian backing. They conflict. Kant’s framework offers no clear way to choose between them.
The deeper point is that Kant’s moral law generates duties but does not rank them. When two duties pull in different directions, the moral agent is on their own. Sartre saw this as a failure of the system. A real moral philosophy should help in exactly these cases, where the agent most needs guidance.
A Kantian can respond that no philosophy can fully resolve every dilemma, that moral life will always include hard choices, and that Kant’s framework is no worse on this point than any other. The response is partial. The criticism survives.
Conflicting duties cannot be resolved
Sartre’s famous example: a young man torn between joining the Resistance (duty to country) and caring for his mother (duty to parent). Both are duties. They conflict. Kant’s framework generates duties but does not rank them. The agent is left without guidance in exactly the cases where guidance is most needed.
Other criticisms
Three more criticisms round out the picture.
Conflict between duty and emotions. Kant insists duty should drive moral action, not emotion. But guilt and shame (which Kant himself recommends as moral training tools) are emotions. There is a tension in saying “act from duty, not from emotion” while also saying “use shame to enforce duty.” Critics argue Kant has not fully reconciled this.
Impracticality of the moral law. Kant’s moral law tells the agent to “act on universal principles.” Critics argue this is too abstract. A real moral law should help with concrete dilemmas, and Kant’s leaves the heavy lifting to the agent. Knowing the categorical imperative does not, by itself, tell you what to do in a specific complicated case.
Public education. Kant himself was in favour of public education despite his concerns about sovereigns training their subjects for their own needs. Critics have pointed to a tension here: state-run schools can become exactly the training apparatus Kant warned against. He was aware of the risk and still supported public education. The position is defensible but not clean.
Duty vs emotions, impracticality of moral law, public education tension
Kant says act from duty not emotion, but recommends shame (an emotion) as training. Tension.
The moral law is too abstract for concrete dilemmas.
He supported public education despite his own warnings about state training of citizens.
What survives the criticisms
A serious student should take Kant’s critics seriously without abandoning Kant. Several things survive the criticism intact.
The general framework of moral autonomy as an educational aim survives. Even critics of Kant’s specific moral law agree that schools should produce people who can think for themselves.
The four tasks of education survive. Disciplined thinking, cultivated outlook, civilisation enhancement, and moral rectitude are all still recognised as proper aims of education, even by people who reject parts of Kant’s deeper system.
The pedagogical rules survive in updated form. Freedom by default, reciprocal freedom, education for the sake of freedom: these structure most modern progressive education even when Kant is not cited by name.
The criticisms do their proper work. They refine the system without destroying it. A student preparing for an exam should know the criticisms, the Kantian responses, and where the modern debate has landed. The system is alive precisely because it has been argued with.
The framework, the four tasks, and the pedagogical rules in refined form
The general framework of moral autonomy as an educational aim survives. The four tasks (discipline, culture, civilization, moral rectitude) survive. The three pedagogical rules survive in updated form. The modern Kantian is more careful than Kant, but is still recognisably Kantian.
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