…the world of man is supernatural in its relation to the
vegetable kingdom, though in reality it is not so. Relatively to the plant, the
reality of man, his power of hearing and sight, are all supernatural, and for
the plant to comprehend that reality and the nature of the powers of man’s mind
is impossible. In like manner for man to comprehend the Divine Essence and the
nature of the great Hereafter is in no wise possible. The merciful outpourings
of that Divine Essence, however, are vouchsafed unto all beings and it is
incumbent upon man to ponder in his heart upon the effusions of the Divine
Grace, the soul being counted as one, rather than upon the Divine Essence
itself. This is the utmost limit for human understanding.
(‘Abdu’l-Baha,
’Tablet to August Forel’)