You're reaction is a bit puzzling. Lots of intense judgement of him, for having his opinion. Something in this, is marrying to something in your own world, to produce your reaction. (Rather than the reaction of "I don't agree, it's nonsense" and simply moving on & ignoring him as not helpful in your life.) You've taken time to post here & look for agreement, so something he said is something you need to "push away." Which is different than a neutral disagreeing & ignoring.
I don't see anything religious. Evil is a secular word for bad stuff that's been purposely done. It didn't dawn on me to bring in evil from religion. Now that it's been pointed out, I see where someone might think of that -- but if it was intended as part of the definition (of the word evil) in those quotes, he'd have been more explicit & elaborate. His entire style is explicit and elaborating on points he's making. So the topic is, people doing mean things intentionally. Isn't his writing from a time period where terms were more commonly used that way (not long ago.)?
I would disagree with his entire underlying statement here. More in a moment.
Some of these are merely quotes of what people sometimes do or are, that accurate. For instance "Is unable to think from the viewpoint of their victim (scapegoat)" is an observation that I'd say is accurate about some people. Same with almost everything on the list.
I disagree that self-deception or intent to remain perfect, is the underlying motivation of a person committing evil. I agree there are people who do self-deception, & everything else on the list. I disagree that, those are the central core to their motivation, & not merely derivative actions (or derivation constructs) to their behaviors.
In my observation: Those people who do evil, create hate. Lots of people create anger in others, but that's not hate. So I'll define evil as those who harm others 1. purposely 2. in intense ways 3. ongoingly. (I.e. act with evil intent.) Those doing evil, have a lack of ability to fill themselves up through a loving connection. They don't know how to experience that. So instead they try to rob others, purposely trying to steal the very core ability to love, out of them. Those doing evil are trying to gain love, by stealing other people's love out of them (disconnect them from it). In other to gain it for themselves - but you can't gain love that way. So to do this they perpetrate hateful evil acts at their target, to try to slowly lose that target's orientation of how to love. So I would disagree that it's motivated by self-deception to preserve a perfect image.
Evil by humans at other humans, is purposeful repeated acts of harm to steal their targets ability to love. To make them as loveless as the source person. To fill up the source person. It fails. Another aspect is that it is at the same time, a replacement of love with power plays. So the motivations are somewhat hidden from the perpetrator. They don't understand there is any other way to be. The acts & harm, are the goal of the perpetrator. They know. It's not hidden, self-deception. It's not to avoid guilt. They by his own definition are narcissistic and don't understand how to feel guilt. It's not to maintain a perfect image. That can't be an endpoint motivation (an underlying goal). Why would one want an perfect image? He must answer that, so I'm not sure you've pulled out the best sequence of quotes to explain his theories.
However, I don't agree with his views - as presented by your quotes. And I do wonder what in here is bothering you, that you wanted agreement for? That seems like the more interesting question. Something that people here might be able to help, or give insight into & support you on, if better understood.
The author writes thoughts, philosophical thoughts. Long before concrete studies can happen, someone has to have an initial thought. So there's nothing to condemn here at him for writing his ideas -- unless someone is shoving them at you & making you uncomfortable with them. In which case, that person's doing of that, is to be heavily condemned.