The testimony of the faith L¯a il¯aha illa’Ll¯ah (There is no divinity but the Divine) is a statement concerning knowledge, not sentiments or the wil… - Hossein Nasr

Islamic science came into being from a wedding between the spirit that issued from the Qur'anic revelation and the existing sciences of various civilizations which Islam inherited and which it transmuted through its spiritual power into a new substance, at once different from and continuous with what had existed before it.

For Muslims the Quran is the Word of God; it is sacred scripture, not a work of "literature," a manual of law, or a text of theology, philosophy or history although it is of incomparable literary quality, contains many injunctions about a Sacred Law, is replete with verses of metaphysical, theological, and philosophical significance, and contains many accounts of sacred history. The unique structure of the Quran and the flow of its content constitute a particular challenge to most modern readers. For traditional Muslims the Quran is not a typical "read" or manual to be studied. For most of them, the most fruitful way of interacting with the Quran is not to sit down and read the Sacred Tex from cover to cover (although there are exceptions, such as completing the whole text during Ramadan). it is, rather, to recite a section with full awareness of it as the Word of God and to meditate upon it as one whose soul is being directly addressed, as the Prophet's soul was addressed during its revelation. ... In this context it must be remembered that the Quran itself speaks constantly of the Origin and the Return, of all things coming from God and returning to Him, who himself has no origin or end. As the Word of god, the Quran also seems to have no beginning and no end. Certain turns of phrase and teachings about the Divine Reality, the human condition, the life of this world, and the Hereafter are often repeated, but they are not mere repetitions. Rather each iteration of a particular word, phrase, or verse opens the door of a hidden passage to other parts of the Quran. Each coda is always a prelude to an as yet undiscovered truth.

The Quran, like other sacred scriptures, associates knowledge and understanding with the heart, and the blindness of the heart with loss of understanding, as for example when God, after complaining of man’s not learning the appropriate lessons from earlier sacred history, asserts, “For indeed it is not the eyes that grow blind, but it is the hearts, which are within the bosoms, that grow blind” (22:46). This blindness of the heart so characteristic of fallen man is also described by the Quran as a hardening of the heart. “But their hearts were hardened, and the devil made all that they used to do seem fair unto them!” (6:43). Also, ““Woe unto those whose hearts are hardened against remembrance of Allah. Such are in plain error” (39:22). Furthermore, the Quran identifies this hardening of the heart with a veil that God has cast over the heart of those who have turned away from the truth. “We have placed upon their hearts veils, lest they should understand, and in their ears a deafness” (6:25); also, “And We place upon their hearts veils lest they should understand it, and in their ears a deafness” (17:46).