Date: 1751, 1777

"We may as well imagine, that minute wheels and springs, like those of a watch, give motion to a loaded wagon, as account for the origin of passion from such abstruse reflections."

— Hume, David (1711-1776)

Date: 1760-7

"Though man is of all others the most curious vehicle, said my father, yet at the same time 'tis of so slight a frame and so totteringly put together, that the sudden jerks and hard jostlings it unavoidably meets with in this rugged journey, would overset and tear it to pieces a dozen times a day...

— Sterne, Laurence (1713-1768)

Date: 1773

"Strong Passions draw, like Horses that are strong, / The Body-Coach of Flesh and Blood along; / While subtle Reason, with each Rein in Hand, / Sits on the Box, and has them at Command; / Rais'd up aloft, to see and to be seen, / Judges the Track, and guides the gay Machine."

— Byrom, John (1692-1763)

Date: 1773

"They who are loud in human Reason's Praise, / And celebrate the Drivers of our Days, / Seem to suppose, by their continual Bawl, / That Passions, Reason, and Machine, is all / To them the Windows are drawn up, and clear / Nothing that does not outwardly appear."

— Byrom, John (1692-1763)