"Say: My creatures are even as the leaves of a tree. They proceed from the tree, and depend upon it for their existence, yet remain oblivious of their root and origin."

"Say: Of all that lieth between heaven and earth, naught can stir except by My leave, and unto My Kingdom none can ascend save at My behest. My creatures, however, have remained veiled from My might and My sovereignty, and are numbered with the heedless. Say: Naught is seen in My revelation but the Revelation of God, and in My might but His Might, could ye but know it. Say: My creatures are even as the leaves of a tree. They proceed from the tree, and depend upon it for their existence, yet remain oblivious of their root and origin. We draw such similitudes for the sake of Our discerning servants that perchance they may transcend a mere plant-like level of existence and attain unto true maturity in this resistless and immovable Cause. Say: My creatures are even as the fish of the deep. Their life dependeth upon the water, and yet they remain unaware of that which, by the grace of an omniscient and omnipotent Lord, sustaineth their very existence. Indeed, their heedlessness is such that were they asked concerning the water and its properties, they would prove entirely ignorant. Thus do We set forth comparisons and similitudes, that perchance the people may turn unto Him Who is the Object of the adoration of the entire creation."

-Bahá'u'lláh, The Summons of the Lord of Hosts, p. 40