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.
Diderot, Denis
A fanatic is a man that does what he thinks the Lord would do if He knew the facts of the case.
Dunne, Finley Peter
Defined in psychological terms, a fanatic is a man who consciously over-compensates a secret doubt.
Huxley, Aldous
There is no strong performance without a little fanaticism in the performer.
Ralph Waldo Emerson
The worst vice of a fanatic is his sincerity.
Samuel Johnson
Fanatical religion driven to a certain point is almost as bad as none at all, but not quite.
Samuel Johnson
The downright fanatic is nearer to the heart of things than the cool and slippery disputant.
Chapin, Edwin Hubbell
Fanaticism is the child of false zeal and superstition, the father of intolerance and persecution.
Fletcher, Samuel
The blind fanaticism of one foolish honest man may cause more evil than the united efforts of twenty rogues.
Grimm, Friedrich, Baron Von
Fanaticism is such an overwhelming impression of the ideas relating to the future world as disqualifies for the duties of this.
Hall, Robert
We often excuse our own want of philanthropy by giving the name of fanaticism to the more ardent zeal of others.
Longfellow, Henry Wadsworth