At first the Arabians used a limited number of letters for that. But already in the VII c with the Islam penetration the writing gained an exceptional significance because it served as a visual expression of Allah's words. The regulated cuphic writing represents lines crossing at right angles, which makes it strict & powerful. The words are simplified, the tokens in a line now do not follow each other but soar in the space as if they have obtained weightlessness or form spiral lines following the shape of the minaret's rounded base.

Hassan Massudi