But the love or hatred of an inferior causes not readily any passion to the superior, though that be the natural propensity of the imagination: While the love or hatred of a superior, causes a passion to the inferior, contrary to its propensity.

In short, the same facility of transition operates not in the same manner upon superior and inferior as upon contiguous and remote.

These two phaenomena appear contradictory, and require some attention to be reconciled.
As the transition of ideas is here made contrary to the natural propensity of the imagination, that faculty must be overpowered by some stronger principle of another kind; and as there is nothing ever present to the mind but impressions and ideas, this principle must necessarily lie in the impressions.

Now it has been observed, that impressions or passions are connected only by their resemblance, and that where any two passions place the mind in the same or in similar dispositions, it very naturally passes from the one to the other: As on the contrary, a repugnance in the dispositions produces a difficulty in the transition of the passions.

But it is observable, that this repugnance may arise from a difference of degree as well as of kind; nor do we experience a greater difficulty in passing suddenly from a small degree of love to a small degree of hatred, than from a small to a great degree of either of these affections.