Understanding

. . . vision, the chief instrument whereby his understanding can function.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 193

First and foremost among these favors, which the Almighty hath conferred upon man, is the gift of understanding. His purpose in conferring such a gift is none other except to enable His creature to know and recognize the one true God -- exalted be His glory. This gift giveth man the power to discern the truth in all things, leadeth him to that which is right, and helpeth him to discover the secrets of creation.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 193

The essence of understanding is to testify to one's poverty, and submit to the Will of the Lord, the Sovereign, the Gracious, the All-Powerful.

Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 155-156