Provided they behave moderately, the more people advance in
the material realm, the more their capacity for attaining spirituality is augmented.
The sounder the body, the greater is the resplendency and manifestation of the
spirit. Truly, what impedes spirituality are the dogmas and imitations that are
contrary to true science and a sound mind.
- 'Abdu'l-Baha (Words of ‘Abdu’l-Baha, New York,
June 4, 1912, Mahmud’s Diary)