Again, the world cannot be a globe, or sphere, or be suspended in mid-air, or in any sort of motion, for what say the Scriptures? "Earth is fixed on its foundations"; "Thou hast laid the foundations of the earth and it abideth"; "Thou hast made the round world so sure, that it cannot be moved"; "Thou hast made all men to dwell upon the face of the whole earth"—not "upon every face," or upon any more than one face—"upon the face," not the back or the side, but the broad flat face we know. "Who then with these passages before him, ought even to speak of Antipodes?"

So much against false doctrine; to establish the truth is simpler still. For the same St. Paul, who disposes of science falsely so called, does not he speak, like David, like St. Peter and St. John, of our world as a tabernacle? "If our earthly house of this tabernacle be dissolved," "We that are in this tabernacle do groan, being burdened," which points to the natural conclusion of enlightened faith, that Moses' tabernacle was an exact copy of the universe. "See thou make all things according to the pattern shewn thee in the Mount." So the four walls, the covered roof, the floor, the proportions of the Tent of the Wilderness, shewed us in small compass all that was in nature.

If any further guidance were needed, it was ready to hand in the Prophet Isaiah and the Patriarch Job. "That stretcheth out the heavens as a curtain and spreadeth them out as a tent to dwell in"; "Also can any understand the spreadings of the clouds or the noise of his tabernacle?"

The whole reasoning is like the theological arguments on the effects of man's fall upon the stars and the vegetable world, or the atmospheric changes due to angels.

But though Cosmas states his system with the claims of an article of faith, there were not wanting men, and even saints, who stood out on the side of reason in geography in the most traditional of times. Isidore of Seville, and Vergil, the Irish missionary of the eighth century, both maintained the old belief of Basil and Ambrose, that the question of the Antipodes was not closed by the Church, and that error in this point was venial and not mortal. For the positive tabernacle-system of "the man who sailed to India" there was never much support; his work was soon forgotten, though it has been called by some paradox-makers "the great authority of the Middle Ages"—in the face of the known facts, that this was the real position of Ptolemy and Strabo, that no one can speak of the "Middle Ages" in this unqualified way any more than of the Modern or Ancient worlds; and that Cosmas is almost unnoticed in the great age of mediæval science, from the twelfth century.

And whatever we may think of Cosmas and his Christian System of the Whole World, Evolved out of Holy Scripture, he is of interest to us as the last of the old Christian geographers, closing one age which, however senile, had once been in the truest sense civilised, and preparing us to enter one that in comparison is literally dark. From the age of Justinian, and from the rise of Islam in the early years of the seventh century, the geographical knowledge of Christendom is on a par with its practical contraction and apparent decline. There are travellers; but for the next five hundred years there are no more theorists, cosmographers, or map-makers of the Universe or Habitable Globe.

From the time that Islam, after a century of world-conquest, began to form itself into an organised state, or federation of states, in the later eighth and earlier ninth centuries a.d.,—thus making itself until the thirteenth century the principal heir of the older Eastern culture,—Christendom was content to take its geography, its ideas of the world in general, from the Arabs, who in their turn depended upon the pre-Christian Greeks.

The relation of Ptolemy and Strabo to modern knowledge is best seen through the work of the Arabic geographers, but the Saracens did much to destroy before they began to build up once more. As the northern barbarians of the fifth century interrupted the hope of a Christian revival of Pagan literature and science, so the Moslems of the seventh and eighth cut short the Catholic and Roman revival of Justinian and Heraclius, in which the new faith and the old state had found a working agreement.

Between Cosmas and the Viking-Age, "Christian," "Roman," "Western" exploration falls within very narrow limits: the few pilgrims whose recollections represent to us the whole literature of travel in the seventh, eighth, and ninth centuries, add nothing fresh even of practical discovery; theory and theoretical work has ceased altogether, and the first stirrings of the new life in the commerce and voyages of Amalphi, and in the sudden and splendid outburst of Norse life in its age of piracy, are not yet, are not really before the world until the time of Alfred of England, of Charles the Bald, of Pope Nicholas I. "the Great." Yet such as it is, this pilgrim stage of European development stands for something. Religion, as it is the first agent in forming our modern nations, is the first impulse towards their expansion. And to us there is a special interest.

For the best known of western travellers in this darkest of the Christian ages (600-870 a.d.), Arculf and Willibald, are both connected with England and the beginnings of English science in the age of Bede.