Praeparatio Evangelica (The Preparation of the Gospel)

'ANAXIMANDER: it is a circle nineteen times as large as the Earth, full of fire, as in the case of the Sun, and is eclipsed in consequence of the rotation of its disk. And it is like a chariot wheel, having its circumference hollow, and full of fire, with only one vent.

'Xenophanes: a cloud condensed.

'The Stoics: a mixture of fire and air. 'Plato: of earth for the more part.

'Anaxagoras, Democritus: a fiery solid, having in itself plains, and mountains, and ravines.

'Heracleitus: earth surrounded with mist. 'Pythagoras: a mirror-like body.'