Groundwork of The Metaphysic of Morals - Common Sense of Duty

Common Sense of Duty

Kant states that there is nothing "which can be regarded as good without qualification, except a good will." A good will is the moral compass that always seeks good: if an agent fails, it is not the fault of the good will but of the agent's ability to carry it out.

In the opening section, Kant explains what is commonly meant by moral obligations and duty. It is fairly common sense, he writes, not to consider moral an act done out of inclination for the self. A shopkeeper with honest prices does so foremost to be respected by his customers, not for the sake of honesty. He "deserves praise and encouragement, but not esteem." It is common knowledge that the people for whose good actions there is no reward are those who act most morally. Kant revises this in his declaration that they are the only people acting morally. We esteem a man who gives up his life because he gains nothing in doing so. "Duty is the necessity to act out of reverence for the law." Thus, to follow the moral law, the intrinsic sense of right and wrong, is our greatest obligation.