It means; Extreme or foolish pride, dangerous overconfidence, infatuation with power, the forbidden emotion that caused the descent of Lucifer into Satan. I see it as deliberate self-exclusion from the entirety of life. It is a form of personality abnegation emphasized by setting a border between oneself and everything else. However, it is a driving force for some. This series of works matches this idea of spiritual division and exclusion from The Absolute.