Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

Kant’s remark comes from his mature moral philosophy in the late Enlightenment, when he was arguing against ethical theories that treat morality as a technique for achieving personal happiness. In works such as the Critique of Practical Reason (1788), Kant distinguishes between empirical “happiness” (a contingent state tied to inclinations and circumstances) and the moral law, which binds rational agents unconditionally. The line appears in his discussion of the “highest good,” where virtue is the condition for being deserving of happiness rather than a means to procure it. It reflects Kant’s broader project of grounding ethics in duty and autonomy rather than in outcomes or self-interest.

The quote draws a sharp boundary between prudence and morality. For Kant, advice about how to be happy belongs to practical self-management and varies from person to person; it cannot yield universal moral laws. Morality, by contrast, concerns acting from duty—out of respect for the moral law—so that one’s will is good in itself. Happiness may be a natural human aim, but it is not the measure of right action. The ethical ideal is to become “worthy” of happiness through virtue, meaning that happiness, if it comes, would be fitting rather than merely desired. The statement encapsulates Kant’s anti-utilitarian insistence on moral worth over pleasurable results.

“Morality is not the doctrine of how we may make ourselves happy, but of how we may make ourselves worthy of happiness.”