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337 instead of love, which for the same reason arises from virtue. To continue the experiment, I change anew the relation of ideas, and suppose the vice to belong to myself. What follows? What is usual. A subsequent change of the passion from hatred to humility. This humility I convert into pride by a new change of the impression; and dfind after all that I have compleated the round, and have by these changes brought back the passion to that very situation, in which I first found it.

But to make the matter still more certain, I alter the object; and instead of vice and virtue, make the trial upon beauty and deformity, riches and poverty, power and servitude. Each of these objects runs the circle of the passions in the same manner, by a change of their relations: And in whatever order we proceed, whether thro' pride, love, hatred, humility, or thro' humility, hatred, love, pride, the experiment is not in the least diversify'd. Esteem and contempt, indeed, arise on some occasions instead of love and hatred; but these are at the bottom the same passions, only diversify'd by some causes, which we shall explain afterwards.

Fifth Experiment. To give greater authority to these experiments, let us change the situation of affairs as much as possible, and place the passions and objects in all the different positions, of which they are susceptible. Let us suppose, beside the relations above-mention'd, that the person, along with whom I make all these experiments, is closely connected with me either by blood or friendship. He is, we shall suppose, my son or brother, or is united to me by a long and familiar acquaintance. Let us next suppose, that the cause of the passion acquires a double relation of impressions and ideas to this person; and let us see what the effects are of all these complicated attractions and relations.

Before we consider what they are in fact, let us determine what they ought to be, conformable to my hypothesis. 'Tis plain, that, according as the impression is either pleasant or