“You have been in the Wrong for so Long,
You don't even know Right.”
Related quotes

Martin Landau: ‘Doubt Is Important’, Washington Times (December 25, 2016)

“Remember everything is right until it's wrong. You'll know when it's wrong.'
'You think so?”
'I'm quite sure. If you don't it doesn't matter. Nothing will matter then.'
Colonel John Boyle and David in Ch. 7
The Garden of Eden (1986)

Peiper on the Malmedy massacre, excerpted from A Traveler's Guide to the Battle for the German Frontier by Charles Whiting.

Commenting on the Writers Guild strike.
Appearance on The Tonight Show with Jay Leno (January 17, 2008)