The physical radiance of the sage...
The physical radiance of the sage, of the one delivered through gnosis, is a reflection on the physical plane of the light of sacred knowledge itself. Realized knowledge resides in the heart, which is the principle of both the mind and the body and cannot but transform both the mind and the body. It is a light which inundates the whole being of man removing from him the veil of ignorance and clothing him in the robe of resplendent luminosity which is the substance of that knowledge itself.
As the Prophet said, “Knowledge is light” (al-‘ilmuu nūrun), and realized knowledge cannot but be the realization of that light which not only illuminates the mind but also beautifies the soul and irradiates the body while, from the operative point of view, realization itself requires as its necessary and preliminary condition the training of both body and soul, a training which prepares the human microcosm for the reception of the “victorial light”7 of sacred knowledge.
Man is imprisoned by his own passions which usually prevent the intelligence within him from functioning in its “normal” fashion according to man's primordial nature, or what Islam calls al-fiṭrah.8 Such infirmities as pride, pettiness, and falsehood are deformations of the soul which are obstacles that stand before the realization of knowledge.
The sapiential perspective sees these evils or sins not only from a moral point of view related to man's will but also from an ontological point of view related to being and knowledge. Man should not be proud but humble because God is and we are not and the neighbor possesses certain perfections which we do not possess.
The basis of humility is therefore not sentimental but intellectual.9 The same is true of charity, truthfulness, and the other cardinal virtues whose absence or inversion marks the deformities of the soul and, theologically speaking, leads to the commitment of sin. To realize knowledge man must cultivate these virtues and embellish the soul in such a manner that it will become worthy of the visitation of the angel of knowledge.