https://en.wikipedia.org/wiki/Eichmann_in_Jerusalem#Banality_of_evil
"Eichmann was actually not a fanatic or a sociopath, but instead an average and mundane person who relied on clichéd defenses rather than thinking for himself, was motivated by professional promotion rather than ideology, and believed in success which he considered the chief standard of "good society". Banality... does not mean that Eichmann's actions were in any way ordinary, but that his actions were motivated by a sort of complacency which was wholly unexceptional.”