Religion makes them crazy. Not a woman I ever met wasn't crazy with religion.
A fanatic, either, religious or political, is the subject of strong delusions.
The incidence of violent brand-loyalty to one's own current dogma has risen.
If one were to take the bible seriously one would go mad. But to take the bible seriously, one must be already mad.
They [zealots] would have everybody be as blind as themselves: to them, to be clear-sighted is libertinism.
Men and women who are used of GOD, if I had only a few words to describe them, they are the passionate-weak, they are the violently-desperate.
The true believer, no matter how rowdy and violent his acts, is basically an obedient and submissive person.
People haunted by the purposelessness of their lives try to find a new content not only by dedicating themselves to a holy cause but also by nursing a fanatical grievance. A mass movement offers them unlimited opportunities for both.
Nothing is so offensive to Christ as lukewarmness in religion.
We fear extremes and shy away from too much ardor in religion as if it were possible to have too much love or too much faith or too much holiness.
He who is involved in ecstasies and visions, who takes dreams for reality, and his own imagination for prophesy, is a fanatical novice of great hope and promise, and will soon advance to the higher stage and kill men for the love of God.
Fanatical religion driven to a certain point is almost as bad as none at all, but not quite.