A brand of either
Islam and
Buhddism. Sufi teaching tends to be very, very
esoteric, making it difficult to assess from the outside.
Sufi teaching differs from
typical religious teachings in that it was developed as a
spiritual system that would teach only what corresponds with
reality, and requires little of what some might call
blind faith. Absent are lofty concepts of
Heaven or
Hell, in this way Sufi teachings are very
Gnostic.
Much of the basic Sufi teaching is reflected in the (relatively) modern work of
Mr. Gurdjieff.
Both
Islamic Sufism and
Buhddist Sufism are notoriously
tolerant, and quite concerned with aquiring ever more
knowledge. Unlike some
organized religion, Sufism encourages one to be
highly critical of everything they are told, and to believe little that they themselves cannot
personally verify.