esteem attending them, may, in part, be ascrib'd to another source, distinct from these three, viz. their interesting the mind by a prospect of the multitude, and importance of their consequences: Tho', in order to account for the operation of this principle, we must also have recourse to sympathy; as we have observ' d in the preceding section.
It may not be amiss, on this occasion, to remark the flexibility of our sentiments, and the several changes they so readily receive from the objects, with which they are conjoin'd. All the sentiments of approbation, which attend any particular species of objects, have a great resemblance to each other, tho' deriv'd from different sources; and, on the other hand, those sentiments, when directed to different objects, are different to the feeling, tho' deriv'd from the same source. Thus the beauty of all visible objects causes a pleasure pretty much the same, tho' it be sometimes deriv'd from the mere species and appearance of the objects; sometimes from sympathy, and an idea of their utility. In like manner, whenever we survey the actions and characters of men, without any particular interest in them, the pleasure, or pain, which arises from the survey (with some minute differences) is, in the main, of the same kind, tho' perhaps there be a great diversity in the causes, from which it is deriv'd. On the other hand, a convenient house, and a virtuous character, cause not the same feeling of approbation; even tho' the source of our approbation be the same, and flow from sympathy and an idea of their utility. There is something very inexplicable in this variation of our feelings; but 'tis what we have experience of with regard to all our passions and sentiments.
