That so brief a span should have separated this most mighty and wondrous Revelation from Mine own previous Manifestation, is a secret that no man can unravel and a mystery such as no mind can fathom. Its duration had been foreordained, and no man shall ever discover its reason unless and until he be informed of the contents of My Hidden Book. (Baha’u’llah, quoted by Shoghi Effendi in ‘The Dispensation of Baha’u’llah’)
