Edward Gibbon's description of Mohammed's God says, "The prophet of Mecca rejected the worship of idols and men, of stars and planets, on the rational principle that whatever rises must set, that whatever is born must die, that whatever is corruptible must decay and perish. In the author of the universe, his rational enthusiasm confessed and adored an infinite and eternal being without form or place, without issue or similitude, present to our most secret thoughts, existing by the necessity of his own nature, and deriving from himself all moral and intellectual perfection. These sublime truths, thus announced in the language of the prophet, are firmly held by his disciples, and defined with metaphysical precision by the interpreters of the Koran. A philosophic theist might subscribe the creed of the Mohammedans; a creed too sublime, perhaps, for our present faculties. What object remains for the fancy, or even the understanding, when we have abstracted from the unknown substance all ideas of time and space, of motion and matter, of sensation and reflection? The first principle of reason and revolution was confirmed by the voice of Mohammed: his proselytes, from India to Morocco, are distinguished by the name of Unitarians; and the danger of idolatry has been prevented by the interdiction of images.
Edward Gibbon, The Decline and Fall of the Roman Empire, Chapter L, "Description of Arabia and Its Inhabitants,"