"For as it is by means of thought only that any thing operates upon our passions, and as these are the only ties of our thoughts, they are really to us the cement of the universe, and all the operations of the mind must, in a great measure, depend on them."
— Hume, David (1711-1776)
An Abstract of a Book Lately Published; Entituled, a Treatise of Human Nature, &c. Wherein the Chief Argument of That Book Is Farther Illustrated and Explained. (London: Printed for C. Borbet [sic], at Addison's Head, over-against St. Dunstan's church, in Fleet-street, 1740).<Link to ESTC>
Reading Hume's A Treatise of Human Nature ed. David Fate Norton and Mary J. Norton (Oxford and New York: Oxford University Press, 2000).