Duty (ethics)

Definition and stakes

Portrait of John Stuart Mill John Stuart Mill,  Utilitarianism

“ It is the business of ethics to tell us what are our duties, or by what test we may know them; but no system of ethics requires that the sole motive of all we do shall be a feeling of duty; on the contrary, ninety-nine hundredths of all our actions are done from other motives, and rightly so done, if the rule of duty does not condemn them. ”
Source: Gutenberg

G. A. Johnston,  An Introduction to Ethics, for Training Colleges… (1915)

“ It is always imposed from outside. The authority of parents, the authority of the law of the land, and the authority of God are all alike in this, that the seat of the authority is external to the agent himself. Now a duty is a moral duty only when it is self-imposed. A duty is my duty only when I recognise that, whatever external sanctions it may possess, it is laid upon me by myself. My conscience acknowledges that it is a duty for me, and my will imposes it upon me as a line of action that ought to be carried out. The duty is an obligation laid upon the self by the self. ”
Source: Wikisource

G. A. Johnston,  An Introduction to Ethics, for Training Colleges… (1915)

“ But while we recognise that all moral rules are liable to exception, it is worth noticing the kind of exception of which they admit. A law of duty must never be broken to satisfy a whim or desire. Never break a law of duty simply to please yourself. One moral rule may be broken only for the sake of a higher moral rule. A duty may be ignored or postponed only for the sake of an over-ruling duty.
§ 4. The Authority of Duty. The conception of duty always involves the consciousness of the existence of some authority with which the duty is invested and by which it is commanded.
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Source: Wikisource

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