One thing and only one thing will unfailingly and alone secure the
undoubted triumph of this sacred Cause, namely, the extent to which our own
inner life and private character mirror forth in their manifold aspects the
splendor of those eternal principles proclaimed by Bahá'u'lláh. (Shoghi Effendi,
from a letter dated 24 September 1924; ‘Baha'i Administration’)
