“Civilization will not attain perfection until the last stone from the last church falls on the last priest.”
Cited as attributed to Zola in The Heretic's Handbook of Quotations : Cutting Comments on Burning Issues (1992) by Charles Bufe, p. 183, but no earlier citation has yet been located, and this appears to be very similar to remarks often attributed to Denis Diderot: "Men will never be free until the last king is strangled with the entrails of the last priest" and "Let us strangle the last king with the guts of the last priest" — these are loosely derived from a statement Diderot actually did make: "his hands would plait the priest's entrails, for want of a rope, to strangle kings."
This quote appeared in soviet popular-scientific work "Satellite atheist" (Sputnik ateista) http://books.google.ru/books/about/%D0%A1%D0%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA_%D0%B0%D1%82%D0%B5%D0%B8%D1%81%D1%82%D0%B0.html?id=Lq9AAAAAIAAJ&redir_esc=y (1959), p. 491.
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Emile Zola 54
French writer (1840-1902) 1840–1902Related quotes

“But nothing lasts, not even stone, not even despair.”
Source: Green Mars (1993), Chapter 3, “Long Runout” (p. 127)

In a speech given on 6 August 1995, at a party to celebrate the birth of his daughter, reported in Haaretz (6 September 1995) and in The Jerusalem Post (7 September 1995).
1990s

“A snowball in the face is surely the perfect beginning to a lasting friendship.”
Source: The Book Thief

“Keep fighting until the last buzzer sounds.”
Source: The World As I See It

“I expect that Woman will be the last thing civilized by Man.”
Source: The Ordeal of Richard Feverel http://www.gutenberg.org/files/4412/4412.txt (1859), Ch. 1.

“This time, at last, it is the real, the unmistakable thing, simple — passionate — perfect — '”
Source: The Wind in the Willows (1908), Ch. 7
Context: But what do the words mean?' asked the wondering Mole.
'That I do not know,' said the Rat simply. 'I passed them on to you as they reached me. Ah! now they return again, and this time full and clear! This time, at last, it is the real, the unmistakable thing, simple — passionate — perfect —

“Dictators always look good until the last minutes.”

“The sense of a long last night over civilization is back again.”
Introducing our Argument
Cannibals and Christians (1966)
Context: We are close to dead. There are faces and bodies like gorged maggots on the dance floor, on the highway, in the city, in the stadium; they are a host of chemical machines who swallow the product of chemical factories, aspirin, preservatives, stimulant, relaxant, and breathe out their chemical wastes into a polluted air. The sense of a long last night over civilization is back again.