Respectfully Quoted: A Dictionary of Quotations. 1989.
Mark Twain (18351910)
A jay hasnt got any more principle than a Congressman. A jay will lie, a jay will steal, a jay will deceive, a jay will betray; and four times out of five, a jay will go back on his solemnest promise.
MARK TWAIN (Samuel L. Clemens), A Tramp Abroad, vol. 1 (vol. 3 of The Writings of Mark Twain), chapter 2, pp. 2526 (1879, reprinted 1968).