As to the difference between inspiration and imagination:
Inspiration is in conformity with the Divine Texts, but imaginations do not
conform therewith. A real, spiritual connection between the True One and the
servant is a luminous bounty which causeth an ecstatic (or divine) flame,
passion and attraction. When this connection is secured (or realized) such an
ecstasy and happiness become manifest in the heart that man doth fly away (with
joy) and uttereth melody and song. Just as the soul bringeth the body in
motion, so that spiritual bounty and real connection likewise moveth (or
cheereth) the human soul.
- ‘Abdu’l-Baha ('Tablets of ‘Abdu’l-Baha, vol. 1')