Source: The Managerial Revolution, 1941, p. 220–221; As cited in Marcel van der Linden (2007, p. 83)
“Considering the optimistic turn taken by world trade AT THIS MOMENT…it is some consolation at least that the revolution has begun in Russia, for I regard the convocation of 'notables' to Petersburg as such a beginning. … [O]n the Continent revolution is imminent and will, moreover, instantly assume a socialist character.”
Source: Letter to Friedrich Engels (8 October 1858), quoted in The Collected Works of Karl Marx and Friedrich Engels: Volume 40. Letters 1856–59 (2010), pp. 346–347
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Karl Marx 290
German philosopher, economist, sociologist, journalist and … 1818–1883Related quotes

“On the Spirit of America” http://books.google.com/books?id=w0IOAAAAIAAJ&pg=PA122, Address to Daughters of the American Revoltion (11 October 1915)
1910s

April 18, 1934. Attributed by Winston Churchill in Vol. 1 of The Second World War. (1948)
Disputed

Statement after the October Revolution of 1917, as quoted in "Communists: The Battle over the Tomb" in TIME (24 April 1964).
Attributions

“There are no other alternatives; either a socialist revolution or a make-believe revolution.”
Message to the Tricontinental (1967)

Speech in Kabul on first anniversary of Saur Revolution http://www.dailytimes.com.pk/opinion/27-Apr-2014/anniversary-of-a-revolution-obliterated-from-history.

Letter to Benjamin Franklin (Feb 2, 1790) as quoted by I. Bernard Cohen, Revolution in Science (1985)

“A revolutionary moment in the world’s history is a time for revolutions, not for patching.”
Pt. 1, 7
Social Insurance and Allied Services (1942)
Context: Any proposals for the future, while they should use to the full the experience gathered in the past, should not be restricted by consideration of sectional interests established in the obtaining of that experience. Now, when the war is abolishing landmarks of every kind, is the opportunity for using experience in a clear field. A revolutionary moment in the world’s history is a time for revolutions, not for patching.

(2011) ( From RT. com http://rt.com/news/immortal-technique-wall-street-revolution-747/}
Interviews
“Communism is Judaism. The Jewish Revolution in Russia was in 1918.”
Source: See War and Debt: The Culling of Humanity https://books.google.com.br/books?id=R1XkAgAAQBAJ&pg=PT261 by Mark Edwards, Xlibris, 2014