
Campaign statement in Fresno, California (10 September 1952); earlier incidence of similar comments exist:
If Mr. Hughes will stop lying about me, I will stop telling the truth about him.
William Randolph Hearst, about Charles Evans Hughes, in 1906, as quoted in The Quote Verifier : Who Said What, Where, and When (2006) by Ralph Keyes
If you will refrain from telling any lies about the Republican Party, I'lll promise not to tell the truth about the Democrats.
Chauncey Depew, as quoted in "If Elected I Promise … "Stories and Gems of Wisdom by and About Politicians (1969) by John F. Parker