The worst vice of a fanatic is his sincerity.

The worst vice of a fanatic is his sincerity.

Fanatical religion driven to a certain point is almost as bad as
none at all, but not quite.

Fanatical religion driven to a certain point is almost as bad as
none at all, but not quite.

In the history of mankind, fanaticism has caused more harm than vice

In the history of mankind, fanaticism has caused more harm than vice

Fanaticism consists of redoubling your efforts when you have
forgotten your aim.

Fanaticism consists of redoubling your efforts when you have
forgotten your aim.

A fanatic is one who can't change his mind and won't change the subject.

A fanatic is one who can't change his mind and won't change the subject.

I wish there were some cure, like the lover's leap, for all heads
of which some single idea has read more

I wish there were some cure, like the lover's leap, for all heads
of which some single idea has obtained an unreasonable and
irregular possession.

Wisdom becomes nonsense in the mouth of a fanatic.

Wisdom becomes nonsense in the mouth of a fanatic.

There is no place in a fanatic's head where reason can enter.

There is no place in a fanatic's head where reason can enter.

As any action or posture long continued will distort and
disfigure the limbs; so the mind likewise is crippled read more

As any action or posture long continued will distort and
disfigure the limbs; so the mind likewise is crippled and
contracted by perpetual application to the same set of ideas.