In the same manner our first moral criticisms are exercised upon the characters and conduct of other people; and we are all very forward to observe how each of these affects us. But we soon learn, that others are equally frank with regard to our own. We become anxious to know how far we deserve their censure or applause, and whether to them we must necessarily appear those agreeable or disagreeable creatures which they represent us. We begin upon this account to examine our own passions and conduct, and to consider how these must appear to them, by considering how they would appear to us if in their situation. We suppose ourselves the spectators of our own behaviour, and endeavour to imagine what effect it would, in this light, produce upon us. This is the only looking-glass by which we can, in some measure, with the eyes of others, scrutinize the propriety of our own conduct. If in this view it pleases us, we are tolerably satisfied. We can be more indifferent about the applause, and, in some measure, despise the censure of others; secure that, however misunderstood or misrepresented, we are the natural and proper objects of approbation. On the contrary, if we are displeased with it, we are often upon that very account more anxious to gain their approbation, and, provided we have not already, as they say, shaken hands with infamy, we are altogether distracted at the thoughts of their censure, which then strikes us with double severity. When I endeavour to examine my own conduct, when I endeavour to pass sentence upon it, and either to approve or condemn it, it is evident that, in all such cases, I divide myself, as it were, into two persons, and that I, the examiner and judge, represent a different character from that other I, the person whose conduct is examined into and judged of. The first is the spectator, whose sentiments with regard to my own conduct I endeavour to enter into, by placing myself in his situation, and by considering how it would appear to me when seen from that particular point of view. The second is the agent, the person whom I properly call myself, and of whose conduct, under the character of a spectator, I was endeavouring to form some opinion. The first is the judge; the second the pannel. But that the judge should, in every respect, be the same with the pannel, is as impossible, as that the cause should, in every respect, be the same with the effect.