A fanatic is one who can't change his mind and won't change the subject.
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.
From fanaticism to barbarism is only one step.
There is no place in a fanatic's head where reason can enter.
Tolerance and freedom of thought are the veritable antidotes to religious fanaticism.
The most dangerous madmen are those created by religion, and people whose aim is to disrupt society always know how to make good use of them on occasion.
In the history of mankind, fanaticism has caused more harm than vice.
Defined in psychological terms, a fanatic is a man who consciously over-compensates a secret doubt.
The fanatic is incorruptible: if he kills for an idea, he can just as well get himself killed for one; in either case, tyrant or martyr, he is a monster.
All fanaticism is repressed doubt.
It may be possible to fight intolerance, stupidity, and fanaticism seperately, but when they come together there is no hope.
Fanatics are picturesque, mankind would rather see gestures than listen to reasons.
The interval between the decay of the old and the formation and establishment of the new constitutes a period of transition which must always necessarily be one of uncertainty, confusion, error, and wild and fierce fanaticism.
The tendency to claim God as an ally for our partisan value and ends is the source of all religious fanaticism.
Fools and fanatics are always so certain of themselves.
Fanaticism, or, to call it by its milder name, enthusiasm, is only powerful and active so long as it is aggressive. Establish it firmly in power, and it becomes conservatism, whether it will or no.
Fanaticism obliterates the feelings of humanity.
A fanatic, either, religious or political, is the subject of strong delusions.
Fanaticism, the false fire of an overheated mind.
In politics, what begins in fear usually ends in folly.
A fanatic is a man that does what he thinks the Lord would do if He knew the facts of the case.
Of all things, wisdom is the most terrified with epidemical fanaticism, because, of all enemies, it is that against which she is the least able to furnish any kind of resource.
If you see one cold and vehement at the same time, set him down for a fanatic.
E.P. Whipple calls fanaticism "religion caricatured," which is a full definition in a word.
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