Not that the incredulous person doesn’t believe in anything. It’s just that he doesn’t believe in everything. Or he believes in one thing at a time. He believes a second thing only if it somehow follows from the first thing. He is nearsighted and methodical, avoiding wide horizons. If two things don’t fit, but you believe both of them, thinking that somewhere, hidden, there must be a third thing that connects them, that’s credulity.
Incredulity doesn’t kill curiosity; it encourages it. Though distrustful of logical chains of ideas, I loved the polyphony of ideas. As long as you don’t believe in them, the collision of two ideas — both false — can create a pleasing interval, a kind of diabolus in Musica. I had no respect for some ideas people were willing to stake their lives on, but two or three ideas that I did not respect might still make a nice melody. Or have a goot beat, and if it was jazz, all the better.
— Umberto Eco, from Foucault’s Pendulum