Him Who hath branched from this mighty Stock

'Abdu'l-Baha in a garden in Haifa

O people of the world! When the Mystic Dove will have winged its flight from its Sanctuary of Praise and sought its far-off goal, its hidden habitation, refer ye whatsoever ye understand not in the Book to Him Who hath branched from this mighty Stock [‘Abdu’l-Baha]. 
- Baha'u'llah  (The Kitab-i-Aqdas)

"The appointed Center of His [Baha'u'llah's] Faih..."

'Abdu'l-Baha

The appointed Center of His [Baha'u'llah's] Faih and the Delineator of its future institutions 
- Shoghi Effendi  (God Passes By)