“We admire the achievements of the Cuban revolution in the sphere of social welfare.”

Tactics and Strategy of the Latin American Revolution (1962)
Context: The most submissive countries and consequently, the most cynical, talk about the threat of Cuban subversion, and they are right. The greatest threat of the Cuban revolution is its own example, its revolutionary ideas, the fact that the government has been able to increase the combativity of the people, led by a leader of world stature, to heights seldom equaled in history. Here is the electrifying example of a people prepared to suffer nuclear immolation so that its ashes may serve as a foundation for new societies. When an agreement was reached by which the atomic missiles were removed, without asking our people, we were not relieved or thankful for the truce; instead we denounced the move with our own voice. We have demonstrated our firm stand, our own position, our decision to fight, even if alone, against all dangers and against the atomic menace of Yankee imperialism.

As quoted in Men in Motion, Henry J. Taylor, Doubleday, Doran & Co., New York: NY, (1944) p. 59. Also quoted in As We Go Marching, John T. Flynn, New York: NY, Free Life Edition (1973) p. 154, first published 1944 https://mises-media.s3.amazonaws.com/As%20We%20Go%20Marching_2.pdf
Other remarks

Primitive Rebels: Studies in Archaic Forms of Social Movement in the 19th and 20th Centuries http://books.google.com/books?id=sCK8AAAAIAAJ&lpg=PP1&pg=PA60#v=onepage&q=&f=false (1971), p. 60.

On the Bay of Pigs Invasion (1961)

Notes on the Cuban Revolution (1960)
Context: The Cuban Revolution takes up Marx at the point where he himself left science to shoulder his revolutionary rifle. And it takes him up at that point, not in a revisionist spirit, of struggling against that which follows Marx, of reviving "pure" Marx, but simply because up to that point Marx, the scientist, placed himself outside of the history he studied and predicted. From then on Marx, the revolutionary, could fight within history.

Source: 1930s- 1950s, Landmarks of Tomorrow: A Report on the New 'Post-Modern' World (1959), p. 111

As quoted in I Will Bear Witness: A Diary of the Nazi Years, 1942-1945, Victor Klemperer, Vol. 2 , Random House, Inc. (2001) p. 317. Goebbels’ “Our Socialism” editorial was written on April 30, 1944.
1940s

As quoted in "Castro Wanted a Nuclear Strike" in The New York Times (October 23, 1992)

Letter to the The Times attacking the "People's Budget" (22 June 1909), p. 8.