Now, since the fancy finds the same facility in passing from the lesser to the greater, as from remote to contiguous, why does not this easy transition of ideas assist the transition of passions in the former case as well as in the latter? The virtues of a friend or brother produce first love, and then pride; because in that case the imagination passes from remote to contiguous, according to its propensity. Our own virtues produce not first pride, and then love to a friend or brother; because the passage in that case would be from contiguous to remote, contrary to its propensity. 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 phenomena 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, 'tis 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. A man, when calm or only moderately agitated, is so different, in every respect, from himself, when disturbed with a violent passion, that no two persons can be more unlike; nor is it easy to pass from the one extreme to the other, without a considerable interval betwixt them. The difficulty is not less, if it be not rather greater in passing from the strong passion to the weak, than in passing from the weak to the strong, provided the one passion upon its appearance destroys the other, and they do not both of them exist at once. But the case is entirely altered, when the passions unite together, and actuate the mind at the same time. A weak passion, when added to a strong, makes not so considerable change in the disposition, as a strong when added to a weak; for which reason there is a closer connexion betwixt the great degree and the small, than betwixt the small degree and the great.