God's revelation in all created things

"Behold how within all things the portals of the Ridván* of God are opened, that seekers may attain the cities of understanding and wisdom, and enter the gardens of knowledge and power. Within every garden they will behold the mystic bride of inner meaning enshrined within the chambers of utterance in the utmost grace and fullest adornment."

-- Baha'u'llah, Book of Certitude

* Ridván - The name of the custodian of Paradise. Baha'u'llah uses it to denote Paradise itself.