"Other knowledges We do as well possess, not a single letter of which We can disclose, nor do We find humanity able to hear even the barest reference to their meaning."

"Within the treasury of Our Wisdom there lieth unrevealed a knowledge, one word of which, if we chose to divulge it to mankind, would cause every human being to recognize the Manifestation of God and to acknowledge His omniscience, would enable every one to discover the secrets of all the sciences, and to attain so high a station as to find himself wholly independent of all past and future learning. Other knowledges We do as well possess, not a single letter of which We can disclose, nor do We find humanity able to hear even the barest reference to their meaning. Thus have We informed you of the knowledge of God, the All-Knowing, the All-Wise. Were We to find worthy vessels, We would deposit within them the treasures of hidden meanings and impart unto them a knowledge, one letter of which would encompass all created things."

-Bahá'u'lláh, The Summons of the Lord of Hosts, p. 35