The Boundaries of Benevolence
Kantian Ethics, Paternalistic Deception, and State Intervention
In Groundwork of the Metaphysics of Morals, Immanuel Kant discusses the foundational principle of moral philosophy and how it applies to humanity. Central to this philosophy is the categorical imperative—an unconditional moral law dictating that rational beings must only act according to maxims they could will to become universal laws. I will analyze the Formula of Humanity as part of the categorical imperative to reflect that it provides a robust moral framework for rejecting paternalistic forms of deception in everyday life, while strictly demanding intervention in critical emergencies to preserve rational agency.
Kant argues that morality is grounded in pure reason rather than natural inclinations, a distinction he illustrates through two types of commands: hypothetical and categorical imperatives. A hypothetical imperative dictates an action merely as a means to achieve a desired outcome, such as “If you want to get a good grade, you must study”. In contrast, the categorical imperative is an unconditional command that is good in itself. It represents an absolute duty that all rational beings must follow regardless of consequence—such as “Do not lie”. To operationalize this imperative, Kant presents three distinct formulations. While the Formula of Universal Law dictates the universal “form” (48) of morality and the Formula of the Kingdom of Ends indicates its “complete determination” (48), the Formula of Humanity addresses its “matter” (48): humanity as an end in itself. Kant distinguishes rational beings from mere objects or animals, noting that “all objects of inclinations have a conditional worth only; for if the inclinations, and the needs founded on them, did not exist, their object would be without worth” (40). Because rational beings possess the unique ability to exert will and assign value to the world around them, they alone possess absolute worth. Consequently, Kant dictates that humans must always be treated as ends and never merely as means. To use someone as a mere means is to reduce an entity of absolute worth to a mere tool of conditional value. Therefore, treating humanity as an end requires respecting the inherent dignity and rational autonomy of every individual, ensuring no one is used solely to advance the goals of another.
Furthermore, Kant uses the Formula of Humanity to discuss and rule out even the paternalistic or benevolent forms of deception or manipulation. The application of the formula is especially clear in cases of deception or manipulation when one’s humanity is being jeopardized to obtain certain goals. In such cases, one rational being is using another rational being as a means to achieve the former’s goals or certain results. This deception undermines the latter’s humanity, as it treats humanity (something with absolute worth) as a means to achieve something of only relative worth. Therefore, deception or manipulation is unacceptable according to Kant’s Formula of Humanity. However, what if the deception or manipulation is of a paternalistic or benevolent nature? According to Kant, such actions should also be ruled out. Paternalism is the action of limiting one’s autonomy to promote their own good but taking away their consent to such action. In Groundwork of the Metaphysics of Morals, Kant rules out paternalism as morally ethical by comparing one’s humanity and their happiness. Valuing a person’s happiness is doing whatever you, as a rational agent, believe is good for them, but valuing one’s humanity takes root in respecting their rationality—their ability to rationalize and come to the conclusion about what is best for themselves. According to the Formula of Humanity, in these cases, an agent must act in ways that the other rational agent consents them to do, as they are all rational beings. Even treating someone merely as a means for their own sake is a violation of their humanity, as they (rational beings of absolute worth) are being used as tools to achieve only something of conditional good (their happiness). Imagine a well-intentioned doctor who lies to a patient about a terminal diagnosis to spare them from severe depression. While this paternalistic deception is motivated by a benevolent desire to protect the patient’s happiness, Kant’s Formula of Humanity dictates that it is immoral. By hiding the truth, the doctor strips away the patient’s autonomy and prevents them from making rational, informed decisions about their own life. Even though the goal is to alleviate suffering, the doctor prioritizes a conditional good (emotional comfort) over an absolute good (the patient’s inherent rationality), ultimately manipulating the patient as a mere means to an end rather than respecting them as a rational being.
It is important to acknowledge a critical philosophical nuance: although orthodox Kantianism famously forbids lying, a Neo-Kantian interpretation would argue that the Formula of Humanity requires a different approach when a person’s rational agency is fundamentally compromised. For example, when a person’s cognitive abilities are temporarily suspended, paternalistic deception is not a violation of their autonomy, but a moral necessity to protect it. Imagine a friend is heavily intoxicated and insists on driving a group of other drunk people to get food. In this state, the alcohol has severely impaired their ability to rationalize or recognize the lethal danger they pose to themselves and others. As a Neo-Kantian following the Formula of Humanity, you are obligated to intervene through direct deception—such as hiding their car keys and lying about where they are, or manipulating them into believing the restaurant is already closed. While this superficially looks like treating your friend as a mere means to an end, the lie is not simply to achieve a conditional good like “happiness.” Instead, it is strictly designed to preserve the absolute good of their humanity: their physical survival and their future capacity for rational thought. Because you cannot respect the autonomy of a rational agent if they die in a preventable crash, this interpretation demands intervention to protect the very vessel of their rationality until they sober up and regain their agency. Because the object of the intervention is the preservation of an absolute good, the Formula of Humanity would demand intervention in these extreme cases. The idea of “treating humanity as an end” is justified in these situations because the benevolent deception is entirely directed towards considering humanity as an ultimate end. Kant provides a robust moral framework for thinking about paternalistic deception: although we must treat humanity as ends, respecting their immediate, impaired choices in emergencies would jeopardize the very existence of their humanity.
Because Kant roots the Formula of Humanity entirely in reason, true adherence to this principle requires carefully distinguishing between conditional and absolute worth. In non-extreme scenarios, paternalistic deception is strictly prohibited, even if it promotes someone’s happiness or well-being (which possess only conditional worth). For instance, lying to a friend to prevent them from wasting time playing video games is unjustifiable; while their poor time management might yield negative consequences, they remain a rational agent who must be left free to autonomously determine what is best for themselves. Conversely, if such deception can prevent the permanent damage of one’s humanity or ability to rationalize, it contains in itself the absolute worth of preserving one’s humanity. The Formula of Humanity remains purely based on reason: it dictates that humanity is an absolute end, and any action that prevents the annihilation of rational agency is a fundamental deontological requirement. While this framework establishes a clear mandate at the extremes of human behavior, it is vulnerable to critique when applied to the grey areas of impaired rationality. By creating a strict binary between minor lifestyle choices and acute emergencies, the framework lacks a precise metric for defining exactly when a rational agent’s capacity is sufficiently diminished to justify the stripping of their autonomy. Without a clear boundary, there is a risk that “impaired rationality” could be over-diagnosed by individuals or authorities to justify paternalistic intervention. Furthermore, the assertion that emergency paternalism avoids consequentialism requires careful scrutiny. Even if the ultimate goal is the preservation of absolute worth, relying on direct deception—such as lying about a friend’s car keys—arguably introduces a consequentialist calculation. It requires the agent to justify an immediate, categorically prohibited act of manipulation by weighing it against the preferable future outcome of the endangered person surviving.
Expanding beyond private interactions, this rigorous deontological architecture for emergency paternalism offers a definitive blueprint for the boundaries of political authority and social governance. Should a state enact mandates simply to enhance the collective happiness or refine the lifestyles of its populace—via social engineering or the suppression of information—it fundamentally transgresses the Formula of Humanity. Such maneuvers treat rational beings as if they lack the internal authority to define their own good, elevating conditional values above absolute worth and depriving the citizenry of the vital opportunity to exercise their own reason. Nevertheless, sovereign intervention transforms into a categorical obligation when the actual capacity for rational agency faces an imminent threat. Legislation ensuring public safety, such as the prohibition of intoxicated driving, does not represent an overreach. Instead, these are the essential duties of a state dedicated to the preservation of the physical and mental embodiment of humanity. Viewed through this lens, a Neo-Kantian government must remain non-interventional regarding personal pursuits of happiness, yet must become protective the moment a citizen’s fundamental capacity for rationality is endangered.
To explore this application within the socio-political sphere, one might examine the oversight of lethal weaponry. Firearms are instruments engineered for destruction, directly threatening the physical continuity of a rational agent. When a weapon is turned against another, the perpetrator commits an act that jeopardizes humanity itself. Within this strict framework, the peril to absolute worth creates an unwavering moral mandate to safeguard it. The state is strictly compelled to intervene—through regulation or restriction—to prioritize the existence of rational beings over the mere conditional desires of individuals to possess dangerous objects. By strictly governing access to arms, the state is not merely dictating a version of social order, but is instead fulfilling an unconditional duty to guard absolute worth against violent extinction.
Ultimately, applying Kant’s Formula of Humanity to personal and state intervention provides a powerful defense against everyday authoritarianism. By strictly separating conditional happiness from the absolute worth of rational agency, the framework successfully invalidates paternalism in daily life while demanding fierce protection against existential threats, such as severe intoxication or lethal weaponry. However, because the framework relies heavily on absolute binaries—between clear-minded and impaired judgment—it struggles to flawlessly navigate the ethical grey areas of diminished capacity. Therefore, while the Formula of Humanity remains a definitive blueprint for defining the limits of state power and preserving realized autonomy, its application to the temporarily impaired mind requires a more nuanced metric to fully bridge this gap.
Bibliography
Kant, Immanuel. Groundwork of the Metaphysics of Morals. Ed. by Mary Gregor and Jens Timmermann. Cambridge University Press, 2012.
Author bio: NL is an aspiring thought-provoker and a lover of philosophical conflicts.
The "categorical imperative": a Prussian version of the ominous "Sermon on the Mount".
I.
I felt that this essay lacked adequate justification for accepting the Formula of Humanity. As far as I can tell, the argument goes something like this:
1. Rational beings (humans) can assign value to the world around them.
2. If something can assign value to the world around it, it has absolute worth.
3. So humans have absolute worth.
4. If something has absolute worth, you shouldn't treat it like it has conditional worth.
5. So you shouldn't treat humans like they have conditional worth.
6. If you use someone as a mere means, then you're treating them like they have conditional worth.
7. So you shouldn't use people as a mere means.
Several concepts in this argument seem unclear to me: rational, value, conditional/absolute worth. And the author does little to defend each of the premises, instead mostly asserting them as given.
II.
The Formula of Humanity seems to contradict common sense intuitions about what is or isn't morally acceptable.
Let's say I'm purchasing bananas at a grocery store. A cashier scans their code, tells me the price, and tells me where to tap my card. In this interaction, I'm using the cashier as a mere means to purchasing the bananas. I do not care what the cashier's ends are. In fact, I wouldn't mind using a self-checkout machine and replacing the cashier entirely. Nonetheless, there doesn't seem anything wrong with using the cashier in this way.
III.
The essay presents an overly expansive view of what the state's proper role is.
The essay claims that the state has an "unwavering moral mandate to safeguard [the existence of rational beings.]"
But to do this "unwaveringly" would be to sacrifice too much, including convenience and individual liberties. For example, fewer people would die if highway speeds were reduced to 30 mph. But this would be a bad policy decision. People are ok with moderately increasing their chance of death in exchange for the convenience of driving normal highway speeds, and the state should respect this preference.
Another example: There would probably be fewer murders if police had cameras installed inside every home. But this would be a bad policy decision. People would not want this pervasive surveillance, even if it safeguarded the existence of rational beings.
More generally, the state should not do everything in its power to safeguard people's existence. One's existence is just one value among many. I don't just want to maximize my continued living. I also want to get to places on time, I want some modicum of privacy, I want to sometimes eat unhealthy, I want to do risky activities like rock climbing or surfing. The state has no business in restricting these things.
To restrict people's freedoms in such a sweeping authoritarian way, one needs a better justification than simply: "We have an unconditional duty to guard absolute worth 🤷♂️"