Praeparatio Evangelica (The Preparation of the Gospel)

'THALES was the first who said that the Sun is eclipsed from the Moon (which is of an earthy nature) coming perpendicularly under it; and that by reflexion in a mirror she is seen situated beneath the Sun's disk.

'Anaximander: from the closing of the orifice of the breathing-hole of the Sun's fire.

'Heracleitus: in consequence of the turning of the boat-like figure, so that the concavity is above, and the convexity below facing our eyes.

'Xenophanes: by extinction, and then again there rises another Sun in the east. But he has incidentally mentioned an eclipse of the Sun lasting over the whole month, and again a total eclipse, so that the day seemed like night.

'Some say that it is a condensation of the invisible clouds coming over the Sun's disk.

'Aristarchus sets the Sun among the fixed stars, and makes the Moon move round the Sun's orbit, and the Sun's disk to be overshadowed in consequence of these inclinations.

'Xenophanes: there are many suns and moons, corresponding to the climes, and sections, and zones of the Earth: and at a certain season the Sun's disk falls into some section of the Earth which is not inhabited by us, and thus, as if stepping into a hole, suffers eclipse. But the same author says that the Sun goes forward into infinity, but seems to revolve because of its distance.'