There are four types: the cretin, the imbecile, the stupid and the mad. Normality is a balanced mixture of all four.
Umberto EcoThe lunatic is all idรฉe fixe, and whatever he comes across confirms his lunacy. You can tell him by the liberties he takes with common sense, by his flashes of inspiration, and by the fact that sooner or later he brings up the Templars.
Umberto EcoI believe that you can reach the point where there is no longer any difference between developing the habit of pretending to believe and developing the habit of believing.
Umberto Eco[I am fascinated by stupidity] because normal intelligence is boring. Two plus two makes four - finished. You have no possibilities! Stupidity is infinite. Two plus two can make billions of different numbers.
Umberto EcoWhen all the archetypes burst out shamelessly, we plumb the depths of Homeric profundity. Two clichรฉs make us laugh but a hundred clichรฉs moves us because we sense dimly that the clichรฉs are talking among themselves, celebrating a reunion. . . . Just as the extreme of pain meets sensual pleasure, and the extreme of perversion borders on mystical energy, so too the extreme of banality allows us to catch a glimpse of the Sublime.
Umberto Eco