To promote knowledge is thus an inescapable duty imposed on every one of the friends of God.
Abdu'l-BaháIn every aspect of life, purity and holiness, cleanliness and refinement, exalt the human condition . . . Even in the physical realm, cleanliness will conduce to spirituality.
Abdu'l-BaháMan is not man simply because of bodily attributes. The standard of divine measure and judgment is his intelligence and spirit
Abdu'l-Bahá