Good people know both good and evil: bad people do not know about either. (Mere Christianity.)
Of all bad men religious bad men are the worst. (Reflections on the Psalms.)
The descent to hell is easy, and those who begin by worshiping power soon worship evil. (The Allegory of Love.)
This brings to mind the words of the prophet:
Woe to those who call evil good and good evil … . (Isaiah 5:20.)
I don’t want to be filled with that woe.
[C.S. Lewis wrote at a time when using “he”, “man”, and “men” was considered proper form to identify women as well. His insights apply to all people, of course, even if he did not also use the words “she”, “woman”, and “women.”]