Besides innumerable experiments that prove this, we here find, that even when the relation remains; if by any particular circumstance its usual effect upon the fancy in producing an association or transition of ideas, is prevented; its usual effect upon the passions, in conveying us from one to another, is in like manner prevented.
Some may, perhaps, find a contradiction betwixt this phaenomenon and that of sympathy, where the mind passes easily from the idea of ourselves to that of any other object related to us.

But this difficulty will vanish, if we consider that in sympathy our own person is not the object of any passion, nor is there any thing, that fixes our attention on ourselves; as in the present case, where we are supposed to be actuated with pride or humility.

Ourself, independent of the perception of every other object, is in reality nothing: For which reason we must turn our view to external objects; and it is natural for us to consider with most attention such as lie contiguous to us, or resemble us.

But when self is the object of a passion, it is not natural to quit the consideration of it, till the passion be exhausted: in which case the double relations of impressions and ideas can no longer operate.
Seventh Experiment.

To put this whole reasoning to a farther trial, let us make a new experiment; and as we have already seen the effects of related passions and ideas, let us here suppose an identity of passions along with a relation of ideas; and let us consider the effects of this new situation.