That the doctrine of the antipodes continued to have life, is shown by the fact that in the sixth century Procopius of Gaza attacks it with a tremendous argument.

He declares that, if there be men on the other side of the earth, Christ must have gone there and suffered a second time to save them; and, therefore, that there must have been there, as necessary preliminaries to his coming, a duplicate Eden, Adam, serpent, and deluge.
Cosmas Indicopleustes also attacked the doctrine with especial bitterness, citing a passage from St.Luke to prove that antipodes are theologically impossible.
At the end of the sixth century came a man from whom much might be expected--St.Isidore of Seville.

He had pondered over ancient thought in science, and, as we have seen, had dared proclaim his belief in the sphericity of the earth; but with that he stopped.

As to the antipodes, the authority of the Psalmist, St.Paul, and St.Augustine silences him; he shuns the whole question as unlawful, subjects reason to faith, and declares that men can not and ought not to exist on opposite sides of the earth.( 33) (33)For the opinions of Basil, Ambrose, and others, see Lecky, History of Rationalism in Europe, New York, 1872, vol.i, p.279.Also Letronne, in Revue des Deux Mondes, March, 1834.

For Lactantius, see citations already given.