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already hinted, that our sense of every kind of virtue is not natural; but that there are some virtues, that produce pleasure and approbation by means of an artiiice or contrivance, which arises from the circumstances and necessity of mankind. Of this kind I assert justice to be; and shall endeavour to defend this opinion by a short, and, I hope, convincing argument, before I examine the nature of the artifice, from which the sense of that virtue is derived.

'Tis evident, that when we praise any actions, we regard only the motives that produced them, and consider the actions. as signs or indications of certain principles in the mind and temper. The external performance has no merit. We must look within to find the moral quality. This we cannot do directly; and therefore fix our attention on actions, as on external signs. But these actions are still considered as signs; and the ultimate object of our praise and approbation is the motive, that produc'd them.

After the same manner, when we require any action, or blame a person for not performing it, we always suppose, that one in that situation shou'd be influenc'd by the proper motive of that action, and we esteem it vicious in him to be regardless of it. If we find, upon enquiry, that the virtuous motive was still powerful over his breast, tho' check'd in its operation by some circumstances unknown to us, we retract