we are moved some peculiarities which may beget a moral partiality and regard. And, as towards our fellow-creatures, so in relation to ourselves, our moral sentiments are all involved with, and take their rise in, the delusive sense of liberty. It is in this that is contained the peculiar force of the terms virtue, duty, guilt and desert. We never pronounce these words without thinking of the action to which they refer, as that which might or might not be done, and therefore unequivocally approve or disapprove in ourselves and others. A virtuous man, as the term is understood by all, as soon as we are led to observe upon those qualities, and the exhibition of those qualities in actual life, which constitute our nature, is a man who, being in full possession of the freedom of human action, is engaged in doing those things which a sound judgment of the tendencies of what we do pronounces to be good. Duty is a term that can scarcely be said to have a meaning, except that which it derives from the delusive sense of liberty. According to the creed of the necessarian, it expresses that mode of action on the part of the individual, which constitutes the best possible application of his capacity to the general benefit(30). In the mean time, if we confine ourselves to this definition, it may as well be taken to describe the best application of a knife, or any other implement proceeding from the hands of the manufacturer, as of the powers of a human being. But we surely have a very different idea in our minds, when we employ the term duty. It is not agreeable to the use of language that we should use this term, except we speak of a being in the exercise of volition. (30) Political Justice, Book II, Chap. IV. Duty then means that which may justly be required of a human creature in the possession of liberty of action. It includes in its proper sense the conception of the empire of will, the notion that mind is an arbiter, that it sits on its throne, and decides, as an absolute prince, this way or that. Duty is the performance of what is due, the discharge of a debt (debitum). But a knife owes nothing, and can in no sense be said to be held to one sort of application rather than another; the debt can only belong to a human being in possession of his liberty, by whom the knife may be applied laudably or otherwise. A multitude of terms instantly occur to us, the application of which is limited in the same manner as the term duty is limited: such are, to owe, obligation, debt, bond, right, claim, sin, crime, guilt, merit and desert. Even reward and punishment, however they may be intelligible when used merely in the sense of motives employed, have in general acceptation a sense peculiarly derived from the supposed freedom of the human will.