The philosophy of the desert can only begin over again. It cannot grow; it cannot have what Protestants call progress and Catholics call development. There is death and hell in the desert when it does begin over again. There is always the possibility that a new prophet will rediscover the old truth; will find again written on the red sands the secret of the obvious. But it will always be the same secret, for which thousands of these simple and serious and splendidly valiant men will die. The highest message of Mahomet is a piece of divine tautology. The very cry that God is God is a repetition of words, like the repetitions of wide sands and rolling skies. The very phrase is like an everlasting echo, that can never cease to say the same sacred word; and when I saw afterwards the mightiest and most magnificent of all the mosques of that land, I found that its inscriptions had the same character of a deliberate and defiant sameness. The ancient Arabic alphabet and script is itself at once so elegant and so exact that it can be used as a fixed ornament, like the egg and dart pattern or the Greek key. It is as if we could make a heraldry of handwriting, or cover a wall-paper with signatures. But the literary style is as recurrent as the decorative style; perhaps that is why it can be used as a decorative style. Phrases are repeated again and again like ornamental stars or flowers. Many modern people, for example, imagine that the Athanasian Creed is full of vain repetitions; but that is because people are too lazy to listen to it, or not lucid enough to understand it. The same terms are used throughout, as they are in a proposition of Euclid. But the steps are all as differentiated and progressive as in a proposition of Euclid. But in the inscriptions of the Mosque whole sentences seem to occur, not like the steps of an argument, but rather like the chorus of a song. This is the impression everywhere produced by this spirit of the sandy wastes; this is the voice of the desert, though the muezzin cries from the high turrets of the city. Indeed one is driven to repeating oneself about the repetition, so overpowering is the impression of the tall horizons of those tremendous plains, brooding upon the soul with all the solemn weight of the self-evident.