A fanatic is a man that does what he thinks the Lord would do if He knew the facts of the case.
-Finley Peter Dunne

A fanatic is one who can’t change his mind and won’t change the subject.
-Winston Churchill

Fanaticism consists in redoubling your efforts when you have forgotten your aim.
-George Santayana

Fanatic is often the name given to people of action by people who are lazy.
-Bryant H. McGill

A fanatic is always the fellow on the other side.
-Will Rogers