As our knowledge of things, even of created and limited things, is knowledge of their qualities and not of their essence, how is it possible to comprehend in its essence the Divine Reality, which is unlimited? For the substance of the essence of anything is not comprehended, but only its qualities.
For example, the substance of the sun is unknown, but is understood by its qualities, which are heat and light. The substance of the essence of man is unknown and not evident, but by its qualities it is characterized and known. Thus everything is known by its qualities and not by its essence. Although the mind encompasses all things, and the outward beings are comprehended by it, nevertheless these beings with regard to their essence are unknown; they are only known with regard to their qualities.
Selected Writings of ‘Abdu’l-Bahá P.322
For example, the substance of the sun is unknown, but is understood by its qualities, which are heat and light. The substance of the essence of man is unknown and not evident, but by its qualities it is characterized and known. Thus everything is known by its qualities and not by its essence. Although the mind encompasses all things, and the outward beings are comprehended by it, nevertheless these beings with regard to their essence are unknown; they are only known with regard to their qualities.
Selected Writings of ‘Abdu’l-Bahá P.322