A great difference inclines us to produce a distance.

The ideas of distance and difference are, therefore, connected together.

Connected ideas are readily taken for each other; and this is in general the source of the metaphor, as we shall have occasion to observe afterwards.
SECT.

XI OF THE AMOROUS PASSION, OR LOVE BETWIXT THE SEXES Of all the compound passions, which proceed from a mixture of love and hatred with other affections, no one better deserves our attention, than that love, which arises betwixt the sexes, as well on account of its force and violence, as those curious principles of philosophy, for which it affords us an uncontestable argument.

It is plain, that this affection, in its most natural state, is derived from the conjunction of three different impressions or passions, viz.