Benevolence may, perhaps, be the sole principle of action in the Deity, and there are several, not improbable, arguments which tend to persuade us that it is so. It is not easy to conceive what other motive an independent and all perfect being, who stands in need of nothing external, and whose happiness is complete in himself, can act from. But whatever may be the case with the Deity, so imperfect a creature as man, the support of whose existence requires so many things external to him, must often act from many other motives. The condition of human nature were peculiarly hard, if those affections, which, by the very nature of our being, ought frequently to influence our conduct, could upon no occasion appear virtuous, or deserve esteem and commendation from any body. Those three systems, that which places virtue in propriety, that which places it in prudence, and that which makes it consist in benevolence, are the principal accounts which have been given of the nature of virtue. To one or other of them, all the other descriptions of virtue, how different soever they may appear, are easily reducible. That system which places virtue in obedience to the will of the Deity, may be counted either among those which make it consist in prudence, or among those which make it consist in propriety. When it is asked, why we ought to obey the will of the Deity, this question, which would be impious and absurd in the highest degree, if asked from any doubt that we ought to obey him, can admit but of two different answers. It must either be said that we ought to obey the will of the Deity because he is a being of infinite power, who will reward us eternally if we do so, and punish us eternally if we do otherwise: Or it must be said, that independent of any regard to our own happiness, or to rewards and punishments of any kind, there is a congruity and fitness that a creature should obey its creator, that a limited and imperfect being should submit to one of infinite and incomprehensible perfections. Besides one or other of these two it is impossible to conceive that any other answer can be given to this question. If the first answer be the proper one, virtue consists in prudence, or in the proper pursuit of our own final interest and happiness; since it is upon this account that we are obliged to obey the will of the Deity. If the second answer be the proper one, virtue must consist in propriety, since the ground of our obligation to obedience is the suitableness or congruity of the sentiments of humility and submission to the superiority of the object which excites them.