Which principles underly morality? (e.g., happiness, duty, fairness)

Morality is fundamentally grounded in the principle of *duty*, as articulated by Immanuel Kant. Duty-based morality (deontology) emphasizes that actions are morally right if they align with universalizable maxims, regardless of consequences. For example, telling the truth is a moral duty, even if it leads to harm, because lying cannot be universally justified without contradiction. This principle ensures consistency, respect for rational autonomy, and the intrinsic worth of individuals, making it a robust foundation for morality.

An argument against morality as an objective or universal principle could be grounded in moral relativism. If morality is culturally or individually constructed, then there is no universal "right" or "wrong." What is considered moral in one society might be immoral in another, suggesting that morality is not based on inherent principles but on subjective human agreements. This undermines the idea of morality as a fixed or absolute framework, reducing it to a set of contingent, context-dependent norms.