Deontology

Deontology by Joshua Cedric Aquino Gundayao, MA, MOHRE

Preliminary Notes

  • Deontologists believe that actions are intrinsically morally right or wrong.

    • Moral character exists independently of consequences.

    • Actions’ moral worth is determined by their nature.

Kant's Philosophy

  • Reason uncovers correct moral principles, which are absolute and cannot be broken.

  • Kant dismisses consequences as irrelevant in moral evaluation.

  • The only unconditionally good entity is a good will, seen as good in all circumstances.

Categorical Imperatives

  • Moral principles are termed categorical imperatives by Kant.

    • These are universal requirements of reason applicable to everyone.

    • Violating a categorical imperative results in one's own irrationality.

    • Moral demands exist irrespective of personal goals or self-interest.

Deontology Overview

  • Duty-based ethics focus on the action rather than its consequences.

  • Rules can be expressed negatively (Do not) or positively.

  • Deontological ethics emphasizes intention over consequences.

    • The right action is prioritized over outcomes.

Basic Assumptions of Deontology

  • Some choices are morally forbidden regardless of positive consequences.

  • Rightness is determined by conformity with moral norms.

  • Morally right actions align with specific rules, duties, or rights.

Understanding Maxims

  • A maxim is a principle that informs an act (e.g., "Try to reduce world hunger").

Deontology versus Other Ethical Theories

  • Act Guidance vs. Character Guidance: Deontology prioritizes actions.

  • Moral Norm vs. Consequences: Deontology prioritizes moral rules over results.

Examples of Deontological Theories

  • Divine Command Theory

  • The Golden Rule

  • Natural Law

  • Kantian Ethics

Divine Command Theory

  • Duty to obey God’s commands.

  • A variant of moral theology and considered deontological ethics.

  • Distinction made between moral prescriptivism and logic-based inquiry.

The Golden Rule

  • The ethic of reciprocity states: "Do to others as you want them to do to you."

  • While useful, it has limitations noted in ethical scenarios.

Natural Law

  • Human reasoning helps discern the Laws of Nature.

  • Humans must act according to discerned natural laws related to survival and procreation.

Imperatives in Deontology

  • An imperative is a prescriptive command to act.

  • Two types of imperatives:

    1. Hypothetical Imperatives - Conditional and based on personal desires (e.g., "If you want Y, you ought to X").

    2. Categorical Imperatives - Absolute commands that must be followed (e.g., "You ought to X").

Good Will

  • Good will is acting out of reverence for moral law.

  • Kant states that nothing can be considered good without limitation except a good will.

Kantian Ethics

  • Reason serves as both the judge and source of morality.

  • Moral principles derived from reason are universally applicable.

Moral Truth and Ethical Duty

  • Moral truths are independent and self-contained.

  • Ethical duty should not stem from subjective opinions but from reason.

  • All individuals share the same ethical duties; being good involves reverence for duty.

Types of Duties

  • Perfect Duties: Strict, inflexible duties with no exceptions.

  • Imperfect Duties: Duties with exceptions, such as aiding those in need (beneficence).

Critique of Other Ethical Theories

  • Utilitarianism allows using individuals as means to ends, which Kant opposes.

  • Kant defends the autonomy and dignity of individuals in moral actions.

  • A good will is not assessed by outcomes, but by the intention alone.

Categorical Imperatives Explained

  • CI1 – Universal Law: Act only according to maxims that could become universal laws without contradiction.

  • CI2 – End in Itself: Treat humanity always as an end, never as a means to an end.

  • CI3 – Kingdom of Ends: Act as if your actions were to legislate moral laws for the whole community.


Maxims: Deontology focuses on the "maxim" or principle behind an action. An action is right only if it aligns with a morally sound maxim.