Grandiosity

Since that time the distinction between the two races, the conqueror or Gothic and the Roman or conquered, had almost disappeared, and the men of the north had become confounded with those of midday in a single nation, to whose grandiosity had contributed that with the rough virtues of savage Germania, this with the traditions of Roman culture and polity.

[…] the narcissistic leader does not use his narcissistic charisma only as a means for political success; he needs success and applause for the sake of his own mental equilibrium. The idea of his greatness and infallibility is essentially based on his narcissistic grandiosity, not on his real achievements as a human being.

U2 have never been a band noted for their love of shy understatement, but even by their standards, their arrival in Las Vegas represents a hitherto-unimagined degree of grandiosity.