
“Suppose you were an idiot. And suppose you were a Republican. But I repeat myself.”
Draft manuscript (c.1881), quoted by Albert Bigelow Paine in Mark Twain: A Biography (1912), p. 724 http://books.google.com/books?id=2UYLAAAAIAAJ&pg=PA724#v=onepage&q&f=false
Variant: Suppose you were an idiot, and suppose you were a member of Congress; but I repeat myself.
“Suppose you were an idiot. And suppose you were a Republican. But I repeat myself.”
Re: RFC: Lisp/Scheme with less parentheses through Python-like significant indentation? http://groups.google.com/group/comp.lang.lisp/msg/308ecb00b29198ba (Usenet article).
Usenet articles, Miscellaneous
“History does not so much repeat as echo, I suppose.”
Source: Vorkosigan Saga, Cryoburn (2010), Chapter 13 (p. 257)
Author's prefaces to the First Edition.
(Buch I) (1867)
“If an idiot were to tell you the same story every day for a year, you would end by believing it.”
Edmund Burke, as quoted in Lacon in Council (1865) by John Frederick Boyes, p. 124
Misattributed
“Suppose time is a circle, bending back on itself. The world repeats itself, precisely, endlessly.”
Source: Einstein's Dreams