Solzhenitsyn described this: It would be hard to identify the exact source of that inner intuition, not founded on rational argument, which prompted our refusal to enter the NKVD schools… People can shout at you from all sides: ‘You must!’ And your own head can be saying also: ‘You must!’ But inside your breast there is a sense of revulsion, repudiation. I don’t want to. It makes me feel sick. Do what you want without me; I want no part of it.
Jonathan Glover, Humanity: A Moral History of the Twentieth Century
morality, rationality