"When they come to be a little better acquainted with themselves, and with their own species, they discover that plain right reason is, nine times in ten, the fettered and shackled attendant of the triumph of the heart and the passions; and, consequently, they address themselves nine times in ten to the conqueror, not to the conquered: and conquerors, you know, must be applied to in the gentlest, the most engaging, and the most insinuating manner."
— Stanhope, Philip Dormer, fourth earl of Chesterfield (1694-1773)
(III.ccxliii, LONDON, March 16, O. S. 1752)
Reading David Roberts' edition of Lord Chesterfield's Letters (Oxford: OUP, 1998); and searching text from Project Gutenberg <Link>
Consulting and citing, where possible, Letters Written by the late Right Honourable Philip Dormer Stanhope, Earl of Chesterfield, to his son, Philip Stanhope, Esq. (London: Printed for J. Dodsley, 1774). <Link to ECCO>
See also Miscellaneous Works of the late Philip Dormer Stanhope, Earl of Chesterfield: Consisting of letters to his Friends, never before printed, and Various Other Articles. 2 vols. (London: Printed for Edward and Charles Dilly, 1777). <Link to ECCO>