In peace we can make many of them ignore good and evil entirely; in danger, the issue is forced upon them in a guise to which even we cannot blind them.
There is here a cruel dilemma before us. If we promoted justice and charity among men, we should be playing directly into the Enemy's hands
 C. S. Lewis, The Screwtape Letters (1942). copy citation

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Author C. S. Lewis
Source The Screwtape Letters
Topic dilemma danger
Date 1942
Language English
Reference
Note
Weblink https://www.truechristianity.info/en/the_screwtape_letters.php

Context

“The danger of inducing cowardice in our patients, therefore, is lest we produce real self-knowledge and self-loathing with consequent repentance and humility. And in fact, in the last war, thousands of humans, by discovering their own cowardice, discovered the whole moral world for the first time. In peace we can make many of them ignore good and evil entirely; in danger, the issue is forced upon them in a guise to which even we cannot blind them. There is here a cruel dilemma before us. If we promoted justice and charity among men, we should be playing directly into the Enemy's hands; but if we guide them to the opposite behaviour, this sooner or later produces (for He permits it to produce) a war or a revolution, and the undisguisable issue of cowardice or courage awakes thousands of men from moral stupor.” source