I believe in evil. It is the property of all those who are certain of truth. Despair and fanaticism are only differing manifestations of evil.
Tolerance gives us spiritual insight, which is as far from fanaticism as the north pole is from the south.
All fanaticism is false, because it is a contradiction of the very nature of God and of Truth. Truth cannot be shut up in a single book, Bible or Veda or Koran, or in a single religion. The Divine Being is eternal and universal and infinite and cannot be the sole property of the Mussulmans or of the Semitic religions only, - those that happened to be in a line from the Bible and to have Jewish or Arabian prophets for their founders.
That can never be reasoned down which was not reasoned up.
All fanaticism is repressed doubt.
It is thus superstition infatuates man from his infancy, fills him with vanity, and enslaves him with fanaticism.
Women, rouse yourselves! The tocsin of reason resounds through the whole universe: recognize your rights. The powerful empire of nature is no longer surrounded by prejudices, fanaticism, superstition and lies.
The Muslim world is threatened by religious fanaticism. The Western world is threatened by secular fanaticism.