“While in the course of ages the nucleus of social custom inscribed in law has been subjected to but slight and gradual modifications, the other portion has been largely developed in directions indicated by the interests of the dominant classes, and to the injury of the classes they oppress.”

Source: A Theology of Liberation (1971), p. 13

Quotes 1990s, 1995-1999, Sovereignty and World Order, 1999
Context: I should say that when people talk about capitalism it's a bit of a joke. There's no such thing. No country, no business class, has ever been willing to subject itself to the free market, free market discipline. Free markets are for others. Like, the Third World is the Third World because they had free markets rammed down their throat. Meanwhile, the enlightened states, England, the United States, others, resorted to massive state intervention to protect private power, and still do. That's right up to the present. I mean, the Reagan administration for example was the most protectionist in post-war American history. Virtually the entire dynamic economy in the United States is based crucially on state initiative and intervention: computers, the internet, telecommunication, automation, pharmaceutical, you just name it. Run through it, and you find massive ripoffs of the public, meaning, a system in which under one guise or another the public pays the costs and takes the risks, and profit is privatized. That's very remote from a free market. Free market is like what India had to suffer for a couple hundred years, and most of the rest of the Third World.

Source: Religion of India (1916), p. 16

The Epic of America (2nd ed., Greenwood Press, 1931), p. 405

Defence of Criminals: A Criticism of Morality (1889)

Principles of Communism (1847)

The Canton, Ohio Speech, Anti-War Speech (1918)
Context: Wars throughout history have been waged for conquest and plunder. In the Middle Ages when the feudal lords who inhabited the castles whose towers may still be seen along the Rhine concluded to enlarge their domains, to increase their power, their prestige and their wealth they declared war upon one another. But they themselves did not go to war any more than the modern feudal lords, the barons of Wall Street go to war. The feudal barons of the Middle Ages, the economic predecessors of the capitalists of our day, declared all wars. And their miserable serfs fought all the battles. The poor, ignorant serfs had been taught to revere their masters; to believe that when their masters declared war upon one another, it was their patriotic duty to fall upon one another and to cut one another's throats for the profit and glory of the lords and barons who held them in contempt. And that is war in a nutshell. The master class has always declared the wars; the subject class has always fought the battles. The master class has had all to gain and nothing to lose, while the subject class has had nothing to gain and all to lose — especially their lives.
They have always taught and trained you to believe it to be your patriotic duty to go to war and to have yourselves slaughtered at their command. But in all the history of the world you, the people, have never had a voice in declaring war, and strange as it certainly appears, no war by any nation in any age has ever been declared by the people.
And here let me emphasize the fact — and it cannot be repeated too often — that the working class who fight all the battles, the working class who make the supreme sacrifices, the working class who freely shed their blood and furnish the corpses, have never yet had a voice in either declaring war or making peace. It is the ruling class that invariably does both. They alone declare war and they alone make peace.
Yours not to reason why;
Yours but to do and die.
That is their motto and we object on the part of the awakening workers of this nation.
If war is right let it be declared by the people. You who have your lives to lose, you certainly above all others have the right to decide the momentous issue of war or peace.

Source: A People's History of the United States (1980), Chapter 24. The Coming Revolt of the Guards, Ch. 24

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Other writings, The Nature of the Judicial Process (1921)