The Morals of Economic Irrationalism (1920)
Context: The richly nourished patriotism of war breeds divisions and antagonisms which are easily exploited afterwards by political, racial, religious, and cultural passions, but most of all by economic interests.<!--p.51
“This is the explanation of all wars, all racial and religious hatreds, all massacres, and all attempts at genocide.”
The Devil's Advocate (1952)
1950s
Context: You see, when a nation threatens another nation the people of the latter forget their factionalism, their local antagonisms, their political differences, their suspicions of each other, their religious hostilities, and band together as one unit. Leaders know that, and that is why so many of them whip up wars during periods of national crisis, or when the people become discontented and angry. The leaders stigmatize the enemy with every vice they can think of, every evil and human depravity. They stimulate their people’s natural fear of all other men by channeling it into a defined fear of just certain men, or nations. Attacking another nation, then, acts as a sort of catharsis, temporarily, on men’s fear of their immediate neighbors. This is the explanation of all wars, all racial and religious hatreds, all massacres, and all attempts at genocide.
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Taylor Caldwell 31
Novelist 1900–1985Related quotes
This means that under international law, no country can ever pass a law that allows torture. There can be no immunity from criminal liability for violation of a “jus cogens” prohibition. The United States has always prohibited torture — in our Constitution, laws, executive orders, judicial decisions and treaties. When we ratify a treaty, it becomes part of US law under the Supremacy Clause of the Constitution. “No exceptional circumstances whatsoever, whether a state of war or a threat of war, internal political instability or any other public emergency, may be invoked as a justification for torture,” the Convention Against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment, which the US ratified, states unequivocally. Torture is considered a grave breach of the Geneva Conventions, also ratified by the United States. Geneva classifies grave breaches as war crimes. The US War Crimes Act and 18 USC, sections 818 and 3231, punish torture, willfully causing great suffering or serious injury to body or health, and inhuman, humiliating or degrading treatment. And the Torture Statute criminalizes the commission, attempt, or conspiracy to commit torture outside the United States.
State-Sanctioned Torture in the Age of Trump https://truthout.org/articles/state-sanctioned-torture-in-the-age-of-trump/, by Marjorie Cohn, Truthout (23 January 2017)

Justice in War-Time (1916), p. 27
1910s
Who is Loyal to America? (1947)
Context: Who are those who are really disloyal? Those who inflame racial hatreds, who sow religious and class dissensions. Those who subvert the Constitution by violating the freedom of the ballot box. Those who make a mockery of majority rule by the use of the filibuster. Those who impair democracy by denying equal educational facilities. Those who frustrate justice by lynch law or by making a farce of jury trials. Those who deny freedom of speech and of the press and of assembly. Those who press for special favors against the interest of the commonwealth. Those who regard public office as a source of private gain. Those who would exalt the military over the civil. Those who for selfish and private purposes stir up national antagonisms and expose the world to the ruin of war.

Source: The Unfinished Autobiography (1951), Chapter II, Part 1

“All religious wars are about people arguing over who has the biggest invisible friend.”
Many unsourced variations are attributed to Arafat.[citation needed] The actual origin is Richard Jeni.
Misattributed
Source: http://www.gdargaud.net/Humor/QuotesReligion.html
Source: The Quincunx of Time (1973), Chapter 8, “The Courtship of Posi and Nega” (p. 89)

From Mussolini's Fasci Italiani di Combattimento (Italian Combat Fasci), Il Popolo d'Italia newspaper, June 6, 1919. Speech published in Revolutionary Fascism, by Erik Norling, Lisbon, Finis Mundi Press (2011) p. 92.
1910s