“As often as Herman had witnessed the slaughter of animals and fish, he always had the same thought: in their behavior toward creatures, all men were Nazis. The smugness with which man could do with other species as he pleased exemplified the most extreme racist theories, the principle that might is right.”
Enemies, A Love Story (New York: Farrar, Straus & Giroux, 1972), p. 257
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Isaac Bashevis Singer 39
Polish-born Jewish-American author 1902–1991Related quotes
“Auschwitz was contained in the principles of Nazi racist theory like the seed in the fruit.”
As quoted in Rethinking the Holocaust, Yehuda Bauer, New Haven: Yale University Press (2001) p. 104

2000s, The Logic of the Colorblind Constitution (2004)

Speech to the American Society in London at the Savoy Hotel, London (28 September 1923) before his tour of the United States, quoted in The Times (29 September 1923), p. 6
Later life

Sir Hartley Shawcross, British prosecutor at the Nuremberg Trials, July 27, 1946 https://avalon.law.yale.edu/imt/07-27-46.asp - day 188 of the trial

Source: Memory, Sorrow, and Thorn, To Green Angel Tower (1993), Part 2, Chapter 24, “The Graylands” (p. 540).

2000s, The Real Abraham Lincoln: A Debate (2002), The South was a Closed Society
Context: There were eight of them that had laws trying to protect black people who were free from being kidnapped as slaves, because under the law of 1850, the Fugitive Slave Act. If a Southerner came across from Virginia to Pennsylvania and saw a black man that he thought he would like to have as a slave, he had to say, 'Well, that’s my runaway slave', and this runaway slave would then be arrested and confined, and then there would be a hearing before a federal commissioner. And the would-be slave owner could summon witnesses—as many as he wanted. The man accused of being a slave could summon no witnesses, had no counsel. And if the federal commissioner decided he was a slave, he was paid $10, and if he decided he was a free man, he was paid $5. It’s hard to imagine any law passed in either Nazi Germany or Stalin's Russia that was more inconsistent with the principles of civil liberty than the Fugitive Slave Act.

General Thomas Graham, p. 234
Sharpe (Novel Series), Sharpe's Fury (2006)