Categorical Imperative
Kant's supreme principle of morality that requires acting only on maxims one could will to become universal laws while always treating humanity as an end and never merely as a means.
Also known as: Kant's Categorical Imperative
Category: Philosophy & Wisdom
Tags: philosophies, philosophy, ethics, morality, deontology
Explanation
The categorical imperative is the central concept in the moral philosophy of Immanuel Kant, presented most fully in his 1785 work the Groundwork of the Metaphysics of Morals. It is Kant's proposed supreme principle of morality, an unconditional command that binds all rational beings regardless of their particular desires or goals. Kant contrasts it with hypothetical imperatives, which tell us what to do only if we happen to want a certain outcome.
Kant offers several formulations that he regarded as expressions of one underlying law. The Formula of Universal Law states that one should act only according to that maxim by which one can at the same time will that it should become a universal law. In practice, this asks whether the principle behind an action could be consistently adopted by everyone without contradiction, exposing actions such as lying or breaking promises as impermissible.
A second influential formulation is the Formula of Humanity, which holds that one should act so as to treat humanity, whether in oneself or in another, always at the same time as an end and never merely as a means. This forbids using people as mere instruments and grounds the idea of human dignity, the notion that persons possess an unconditional worth that must be respected.
For Kant, moral worth lies in acting from duty out of respect for the moral law, rather than from inclination or self-interest. The categorical imperative is therefore a test that a rational agent applies through reason alone, making morality a matter of autonomy, since rational beings give the law to themselves rather than receiving it from external authority or consequences.
Kant's deontological approach stands in sharp contrast to consequentialist theories such as utilitarianism, which judge actions by their outcomes. The categorical imperative has profoundly shaped modern ethics, human rights discourse, and debates about duty, universalizability, and the intrinsic value of persons, while also inviting enduring criticism about its rigor and its handling of conflicting duties.
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