Fanaticism is overcompensation for doubt.
Robertson Davies
There is no place in a fanatic's head where reason can enter.
Napoleon Bonaparte
What is fanaticism today is the fashionable creed tomorrow, and trite as the multiplication table a week after.
Phillips, Wendell
Fanatics are picturesque, mankind would rather see gestures than listen to reasons.
Nietzsche, Friedrich
Fanatic faith, once wedded fast to some dear falsehood, hugs it to the last.
Thomas Moore
There is no place in a fanatic's head where reason can enter.
Napoleon Bonaparte
Everybody knows that fanaticism is religion caricatured, and yet, with many, contempt of fanaticism is regarded as a sign of hostility to religion.
Whipple, Edwin Percy
We discover in the gospels, a groundwork of vulgar ignorance, of things impossible, of superstition, fanaticism and fabrication
Thomas Jefferson
The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.
Bertrand Russell
Theological religion is the source of all imaginable follies and disturbances; it is the parent of fanaticism and civil discord; it is the enemy of mankind.
Voltaire
Fanatics in power and the funnel of a tornado have this in common - the narrow path in which they move is marked by violence and destruction
Oscar Ostlund
Fanaticism is such an overwhelming impression of the ideas relating to the future world as disqualifies for the duties of life.
Robert Hall