“Great contest follows, and much learned dust
Involves the combatants; each claiming truth,
And truth disclaiming both.”
Source: The Task (1785), Book III, The Garden, Line 161.
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William Cowper 174
(1731–1800) English poet and hymnodist 1731–1800Related quotes

AIKMAN, Duncan, New York Times Magazine, February 19, 1933, p. 3 http://query.nytimes.com/gst/abstract.html?res=9A02E7DA1539E033A2575AC1A9649C946294D6CF&nytmobile=0&legacy=true
Source: Between stigma and charisma: new religious movements and public mental health (Tussen stigma en charisma: nieuwe religieuze bewegingen en volksgezondheid) Deventer, Van Loghum Slaterus, page 343.

Letter https://founders.archives.gov/documents/Jefferson/98-01-02-1712 to William Roscoe (27 December 1820)
1820s
Source: Textual politics: Discourse and social dynamics, 1995, p. 156

“The way to combat noxious ideas is with other ideas. The way to combat falsehoods is with truth.”
Mike Wallace interview (4 November 1958), quoted in The Great Quotations (1966) by George Seldes
Other speeches and writings
“Who claims Truth, Truth abandons.”
Source: Mason & Dixon (1997), Ch. 35
Context: Who claims Truth, Truth abandons. History is hir'd, or coerc'd, only in Interests that must ever prove base. She is too innocent, to be left within the reach of anyone in Power, — who need but touch her, and all her Credit is in the instant vanish'd, as if it had never been. She needs rather to be tended lovingly and honorably by fabulists and counterfeiters, Ballad-Mongers and Cranks of ev'ry Radius, Masters of Disguise to provide her the Costume, Toilette, and Bearing, and Speech nimble enough to keep her beyond the Desires, or even the Curiosity, of Government.

“It was both true, and not the complete truth, like so much of his talk.”
Source: Four Hundred Billion Stars (1988), Chapter 3 “The Keep” (p. 197)