The “Kingdom is the real world, and this nether place is only its shadow stretching out.”

Know thou that the Kingdom is the real world, and this nether place is only its shadow stretching out. A shadow hath no life of its own; its existence is only a fantasy, and nothing more; it is but images reflected in water, and seeming as pictures to the eye. 
(‘Abdu'l-Baha, ‘Selections from the Writings of Abdu'l-Baha’)