I make a still farther trial; and instead of removing the relation, I only change it for one of a different kind.

I suppose the virtue to belong to my companion, not to myself; and observe what follows from this alteration.
I immediately perceive the affections wheel to about, and leaving pride, where there is only one relation, viz, of impressions, fall to the side of love, where they are attracted by a double relation of impressions and ideas.

By repeating the same experiment, in changing anew the relation of ideas, I bring the affections back to pride; and by a new repetition I again place them at love or kindness.

Being fully convinced of the influence of this relation, I try the effects of the other; and by changing virtue for vice, convert the pleasant impression, which arises from the former, into the disagreeable one, which proceeds from the latter.

The effect still answers expectation.