“Ask yourself why totalitarian dictatorships find it necessary to pour money and effort into propaganda for their own helpless, chained, gagged slaves, who have no means of protest or defense. The answer is that even the humblest peasant or the lowest savage would rise in blind rebellion, were he to realize that he is being immolated, not to some incomprehensible noble purpose, but to plain, naked human evil.”

To Leon Goldensohn, April 6, 1946, from "The Nuremberg Interviews" by Leon Goldensohn, Robert Gellately - History - 2004
Context: What I would like to emanate from the darkness of this tragedy is one spark of life. I mean, the realization that crime does not begin when you murder people. Crime begins with propaganda, even if such propaganda is for a good cause. The moment propaganda turns against another nation or against any human being, evil starts. Whereas the Germans started propaganda toward the end of this tragedy, you Allies stand at the beginning of the tragedy.

Man's Search for Meaning (1946; 1959; 1984)

Source: Wild Swans: Three Daughters of China

The Faith of Puppets: Leopardi and the Souls of Machines (p.35-6)
The Soul of the Marionette: A Short Enquiry into Human Freedom (2015)

Parliamentary speech, 2 December 2005 (excerpts)

Source: They'd Rather Be Right (1954), p. 49.

Matterhorn: A Novel of the Vietnam War, Ch. 19 (2010).
Context: He thought of the jungle, already regrowing around him to cover the scars they had created. He thought of the tiger, killing to eat. Was that evil? And ants? They killed. No, the jungle wasn't evil. It was indifferent. So, too, was the world. Evil, then, must be the negation of something man had added to the world. Ultimately, it was caring about something that made the world liable to evil. Caring. And then the caring gets torn asunder. Everybody dies, but not everybody cares.It occurred to Mellas that he could create the possibility of good or evil through caring. He could nullify the indifferent world. But in so doing he opened himself up to the pain of watching it get blown away. His killing that day would not have been evil if the dead soldiers hadn't been loved by mothers, sisters, friends, wives. Mellas understood that in destroying the fabric that linked those people, he had participated in evil, but this evil had hurt him as well. He also understood that his participation in evil, was a result of being human. Being human was the best he could do. Without man there would be no evil. But there was also no good, nothing moral built over the world of fact. Humans were responsible for it all. He laughed at the cosmic joke, but he felt heartsick.

The Progressive interview (2010)

Adele Astaire op. cit.