A mixture of gullibility and cynicism had been an outstanding characteristic of mob mentality before it became an everyday phenomenon of masses. In a… - Hannah Arendt

In an ever-changing, incomprehensible world the masses had reached the point where they would, at the same time, believe everything and nothing, think that everything was possible and that nothing was true. [...] under such conditions, one could make people believe the most fantastic statements one day, and trust that if the next day they were given irrefutable proof of their falsehood, they would take refuge in cynicism; instead of deserting the leaders who had lied to them, they would protest that they had known all along that the statement was a lie and would admire the leaders for their superior tactical cleverness.

I came back [to school] in the fall, as a full-time boarder, with a certain set to my jaw, determined to go it alone. A summer passed in thoughtful isolation, rowing on a mountain lake, diving from a pier, had made me perfectly reckless. I was going to get myself recognized at whatever price. It was in this cold, empty gambler’s mood, common to politicians and adolescents, that I surveyed the convent setup. If I could not win fame by goodness, I was ready to do it by badness.

[H]e was genuinely incapable of uttering a single sentence that was not a cliché.[…] Eichmann, despite his rather bad memory, repeated word for word the same stock phrases and self-invented clichés (when he did succeed in constructing a sentence of his own, he repeated it until it became a cliché) each time he referred to an incident or event of importance to him.[…] The longer one listened to him, the more obvious it became that his inability to speak was closely connected with an inability to think, namely to think from the standpoint of somebody else. No communication was possible with him, not because he lied but because he was surrounded by the most reliable of all safeguards against the words and the presence of others, and hence against reality as such.

For the trouble with lying and deceiving is that their efficiency depends entirely upon a clear notion of the truth that the liar and deceiver wishes to hide. In this sense, truth, even if it does not prevail in public, possesses an ineradicable primacy over all falsehoods.