“The history of all hitherto existing society is the history of class struggles.”

Art History And Class Struggle (1978)

In the Shadow of History, Chapter: Why should we study History? p. 4
History, What History Tells Us, In the Shadow of History

Source: Reform or Revolution (1899), Ch.8

"The Politics of Mass Strikes and Unions"; Collected Works 2 <!-- p. 465 -->
Context: The modern proletarian class doesn't carry out its struggle according to a plan set out in some book or theory; the modern workers' struggle is a part of history, a part of social progress, and in the middle of history, in the middle of progress, in the middle of the fight, we learn how we must fight... That's exactly what is laudable about it, that's exactly why this colossal piece of culture, within the modern workers' movement, is epoch-defining: that the great masses of the working people first forge from their own consciousness, from their own belief, and even from their own understanding the weapons of their own liberation.

On the Juche Idea, treatise submitted to the National Seminar on the Juche Idea held to mark the 70th birthday of the Great Leader Comrade Kim II Sung (31 March 1982)

Source: The Amber Spyglass

quoted from Arun Shourie (2014) Eminent Historians: Their Technology, Their Line, Their Fraud. HarperCollins

"The Criminality of the State" in American Mercury (March 1939) http://alumnus.caltech.edu/~ckank/FultonsLair/013/nock/criminality.html
Context: The State's criminality is nothing new and nothing to be wondered at. It began when the first predatory group of men clustered together and formed the State, and it will continue as long as the State exists in the world, because the State is fundamentally an anti-social institution, fundamentally criminal. The idea that the State originated to serve any kind of social purpose is completely unhistorical. It originated in conquest and confiscation—that is to say, in crime. It originated for the purpose of maintaining the division of society into an owning-and-exploiting class and a propertyless dependent class — that is, for a criminal purpose.
No State known to history originated in any other manner, or for any other purpose. Like all predatory or parasitic institutions, its first instinct is that of self-preservation. All its enterprises are directed first towards preserving its own life, and, second, towards increasing its own power and enlarging the scope of its own activity. For the sake of this it will, and regularly does, commit any crime which circumstances make expedient.

Ali Shariati, in: The Islamic Quarterly, Vol. 27-29, (1983), p. 215; as quoted in: Ali Mirsepassi (2000), Intellectual Discourse and the Politics of Modernization, p. 126.