Ethics
Deontology
Ethics based on duties and rules — actions right or wrong intrinsically
Deontology (from Greek "deon" = duty) is an ethical theory holding that some actions are intrinsically right or wrong regardless of consequences. Most associated with Immanuel Kant (1785). Central feature: moral rules (duties) bind universally. Examples: don't lie, keep promises, respect persons. Contrasts with consequentialism (utilitarianism). Kant's Categorical Imperative: "Act only on the maxim by which you can at the same time will that it should become a universal law." Don't treat persons as mere means. Strengths: protects rights; intuitive force. Critiques: rigid; conflicts between duties; ignores outcomes.
- EtymologyGreek "deon" (duty) + "logos" (study)
- Major proponentImmanuel Kant (1785)
- Categorical ImperativeAct only on universalizable maxims
- TypeNon-consequentialist; rule-based
- Key featurePersons as ends, not mere means
- Famous testUniversal Law formula
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Why deontology matters
- Human rights. Foundation of rights-based ethics.
- Medical ethics. Patient autonomy.
- Law. Rule-based moral foundations.
- Business ethics. Treating workers as ends.
- International ethics. Universal duties.
- Counterweight to utilitarianism. Protects individuals.
- Education. Foundational ethical theory.
Common misconceptions
- Just rules. Reasoning from rationality.
- Anti-consequentialist. Not denies consequences matter; just not exclusively.
- Religious commitment. Kant secular; though some divine command versions exist.
- Inflexible. Modern versions allow exceptions in extreme cases.
- One theory. Many variants disagree.
- Ignores feelings. Acknowledges; just doesn't ground morality in them.
Frequently asked questions
What's deontological ethics?
Ethical theory: actions intrinsically right or wrong regardless of consequences. Some duties are absolute. Kant's view: moral worth from acting from duty, not from consequences or inclination. Right action: action commanded by reason. Universal: same moral law applies to all rational beings. Contrasts with consequentialism: outcomes don't determine rightness; rules and intentions do.
What's the Categorical Imperative?
Kant's central principle. Three formulations (same idea, different framings). (1) Universal Law: "Act only on maxim by which you can will it become universal law." Test: could everyone do this? (2) Humanity formula: "Treat persons as ends in themselves, never merely as means." Don't use people. (3) Kingdom of Ends: act as if making laws for community of rational beings.
How is the Universal Law formula applied?
Test: can the maxim of your action be willed as universal law? Example: lying for personal gain. If everyone lied: trust would collapse; lying as practice would self-defeat (no one believes you). Maxim self-contradictory. Therefore: don't lie. Tests for moral consistency. Some interpretations: focuses on conceiving universalization; others on willing it.
What's the means-ends distinction?
Kant: never treat persons as mere means. People have dignity, rationality; not just tools for others' purposes. Doesn't mean can't use people functionally — just must respect their autonomy and humanity. Example: hiring someone OK (mutually beneficial); deceiving them to benefit you not OK. Foundation of: human rights, autonomy ethics.
How does it differ from consequentialism?
Different fundamental approaches. Deontology: intentions/rules matter; outcomes don't determine rightness. Consequentialism: outcomes are everything. Famous case: lying to murderer about victim's location. Deontology (Kant): never lie, even to murderer. Consequentialism: lie to save life. Most people: lie to murderer (intuitive support for rule-bending under extreme circumstances).
What are common objections?
(1) Rigidity: can't lie even to save life; counterintuitive. (2) Conflicts: when duties contradict (truth vs life), no resolution. (3) Ignores consequences: outcomes matter morally. (4) Universalizability test ambiguous. (5) Means-ends application sometimes unclear. (6) Cultural relativity questions universal claims. Many object to Kant specifically while accepting deontology generally.
What are different types?
(1) Kantian: duties from rationality; categorical imperative. (2) Divine command theory: God's commands establish duties. (3) Natural law: duties from human nature. (4) Rights-based: respecting individual rights. (5) Contractualist (Scanlon): principles no one could reasonably reject. (6) Threshold deontology: rules with consequentialist override. Modern moral philosophy: many hybrid positions.