Note 1320 — AN ESSAY ON MAN, IN FOUR EPISTLES (continued 3)
Reading edition
Bolingbroke, Fragment 3: "Reason improved sociability, extended it to relations more remote, and united several families into one community, as instinct had united several individuals into one family." "Interest" in Pope's line signifies "advantage." Reason, he says, teaches man to improve on the ties of instinct, and form connections beyond his immediate family, whereby he at once extends his love, and the advantages derived from it.