Eyeless in Gaza

The deeds were monstrous, but the doer [Adolf Eichmann] [...] was quite ordinary, commonplace, and neither demonic nor monstrous. There was no sign in him of firm ideological convictions or of specific evil motives, and the only notable characteristic one could detect in his past behavior as well as in his behavior during the trial and throughout the pre-trial police examination was something entirely negative: it was not stupidity but thoughtlessness [...] Might the problem of good and evil, our faculty for telling right from wrong, be connected with our faculty of thought?[p.22 →]

— Hannah Arendt, The Life of the Mind