The quality is the beauty, and the subject is the house, considered as his property or contrivance.

Both these parts are essential, nor is the distinction vain and chimerical.

Beauty, considered merely as such, unless placed upon something related to us, never produces any pride or vanity; and the strongest relation alone, without beauty, or something else in its place, has as little influence on that passion.

Since, therefore, these two particulars are easily separated and there is a necessity for their conjunction, in order to produce the passion, we ought to consider them as component parts of the cause; and infix in our minds an exact idea of this distinction.
SECT.

III WHENCE THESE OBJECTS AND CAUSES ARE DERIVED Being so far advanced as to observe a difference betwixt the object of the passions and their cause, and to distinguish in the cause the quality, which operates on the passions, from the subject, in which it inheres; we now proceed to examine what determines each of them to be what it is, and assigns such a particular object, and quality, and subject to these affections.