“It cannot be sufficiently emphasized that revolution is in vain unless inspired by its ultimate ideal. Revolutionary methods must be in tune with revolutionary aims. The means used to further the revolution must harmonize with its purposes. In short, the ethical values which the revolution is to establish in the new society must be initiated with the revolutionary activities of the so-called transitional period. The latter can serve as a real and dependable bridge to the better life only if built of the same material as the life to be achieved.”

Source: The Self Awakened: Pragmatism Unbound (2007), p. 143

"On Revolutionary Morality" (1958)
1950's, On Revolutionary Morality (1958)

Sound Socialist Tactics (1912)

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.

My Disillusionment in Russia (1923)
Context: Its first ethical precept is the identity of means used and aims sought. The ultimate end of all revolutionary social change is to establish the sanctity of human life, the dignity of man, the right of every human being to liberty and wellbeing. Unless this be the essential aim of revolution, violent social changes would have no justification. For external social alterations can be, and have been, accomplished by the normal processes of evolution. Revolution, on the contrary, signifies not mere external change, but internal, basic, fundamental change. That internal change of concepts and ideas, permeating ever-larger social strata, finally culminates in the violent upheaval known as revolution.

My Disillusionment in Russia (1923)

Listen Yankee (1960), pp. 54.
1960s