These are appropriate as well . . .
A lie told often enough becomes the truth.
Lenin (1870 - 1924)
A lie can travel halfway around the world while the truth is putting on its shoes.
Mark Twain (1835 - 1910)
The history of our race, and each individual's experience, are sown thick with evidence that a truth is not hard to kill and that a lie told well is immortal.
Mark Twain (1835 - 1910), Advice to Youth
He uses statistics as a drunken man uses lamp posts - for support rather than for illumination. ~Andrew Lang
Torture numbers, and they'll confess to anything. ~Gregg Easterbrook
Some nice little wisdoms to throw in the teeth of breed ban enthusiasts and other liars.