"For, with regard to the similar circumstances of different facts, as by the repetition such circumstances are more deeply imprinted, the mind acquires a habit of retaining them, omitting those circumstances peculiar to each, wherein their differences consist."
— Campbell, George (1719-1796)
(I, pp. 130-2)
The Philosophy of Rhetoric. By George Campbell, 2 vols. (London: Printed for W. Strahan; and T. Cadell, 1776). <Link to ESTC>