We not only turn our thought from one to the other upon account of their relation, but likewise endeavour to give them a new relation, viz.
that of a CONJUNCTION IN PLACE, that we may render the transition more easy and natural.

For it is a quality, which I shall often have occasion to remark in human nature, and shall explain more fully in its proper place, that when objects are united by any relation, we have a strong propensity to add some new relation to them, in order to compleat the union.

In our arrangement of bodies we never fail to place such as are resembling, in contiguity to each other, or at least in correspondent points of view: Why?
but because we feel a satisfaction in joining the relation of contiguity to that of resemblance, or the resemblance of situation to that of qualities.

The effects this propensity have been [Sect.

2, towards the end.] already observed in that resemblance, which we so readily suppose betwixt particular impressions and their external causes.