1.
Simplifying to the extreme, I define postmodern as incredulity toward metanarratives.
Jean-Francois Lyotard
3.
When incredulity becomes a faith, it is less rational than a religion.
Jules de Goncourt
4.
...the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it.
Niccolo Machiavelli
5.
Knowledge of divine things for the most part, as Heraclitus says, is lost to us by incredulity.
Plutarch
6.
Nothing is so contemptible as that affectation of wisdom, which some display, by universal incredulity.
Oliver Goldsmith