“All wars come to an end, at least temporarily. But the authority acquired by the state hangs on; political power never abdicates.”

Power and the Useful Economist (1973)
Context: When the modern corporation acquires power over markets, power in the community, power over the state and power over belief, it is a political instrument, different in degree but not in kind from the state itself. To hold otherwise — to deny the political character of the modern corporation — is not merely to avoid the reality. It is to disguise the reality. The victims of that disguise are those we instruct in error. The beneficiaries are the institutions whose power we so disguise. Let there be no question: economics, so long as it is thus taught, becomes, however unconsciously, a part of the arrangement by which the citizen or student is kept from seeing how he or she is, or will be, governed.

My Disillusionment in Russia (1923)

1930s, Address at Chautauqua, New York (1936)
Context: I wish I could keep war from all Nations; but that is beyond my power. I can at least make certain that no act of the United States helps to produce or to promote war. I can at least make clear that the conscience of America revolts against war and that any Nation which provokes war forfeits the sympathy of the people of the United States.

Writing for the court, Korematsu v. United States, 33 U.S. 124 (1944).

Letter to Kingsley Martin on the Spanish Civil War (9 August 1937), quoted in Kingsley Martin, Editor: A Second Volume of Autobiography, 1931–45 (1968), p. 257
1930s

Final lines
Civil Disobedience (1849)
Context: Is a democracy, such as we know it, the last improvement possible in government? Is it not possible to take a step further towards recognizing and organizing the rights of man? There will never be a really free and enlightened State until the State comes to recognize the individual as a higher and independent power, from which all its own power and authority are derived, and treats him accordingly. I please myself with imagining a State at least which can afford to be just to all men, and to treat the individual with respect as a neighbor; which even would not think it inconsistent with its own repose if a few were to live aloof from it, not meddling with it, nor embraced by it, who fulfilled all the duties of neighbors and fellow-men. A State which bore this kind of fruit, and suffered it to drop off as fast as it ripened, would prepare the way for a still more perfect and glorious State, which also I have imagined, but not yet anywhere seen.

"The Problem of Dissent" in Saturday Review, Volume 48 (December 1965), p. 81; also read into the US Congressional Record (26 June 1969)

Revolution by Number