“The reason I'm so bitter and, as I said, in anguish, nowadays, or one of the reasons, is that everybody's begun to lie and because they lie they assume that I lie too: they overlook the fact that I remember very well many things (of course I've forgotten some), but I do believe that lying is a sin, unless it's an innocent lie based on lack of memory, certainly the giving of false evidence and being a false witness is a mortal sin, but what I mean is, insofar as lying has become so prevalent in the world today (thanks to Marxian Dialectal propaganda and Comintern techniques among other causes) that, when a man tells the truth, everybody, looking in the mirror and seeing a liar, assumes that the truth-teller is lying too.”

Book II, Ch. 17
Attributed

Audience laughs
http://www.youtube.com/watch?v=F8B09JYv4Hs&feature=channel_video_title
Dialogue

Doctor Wortle's School (1881) Ch. 6

Falsehood, i
The Note-Books of Samuel Butler (1912), Part XIX - Truth and Convenience

Source: The Princess Bride

The Darkest Part of the Forest

Source: White Cat

<p>Original: E a suprema glória disto tudo, meu amor, é pensar que talvez isto não seja verdade, nem eu o creia verdadeiro.</p><p>E quando a mentira comece a dar-nos prazer, falemos a verdade para lhe mentirmos.</p>
Ibid., p. 280
The Book of Disquiet