Note 12 — Chapter I · SPECULATIVE PHILOSOPHY IN GREECE, BEFORE AND IN THE TIME OF SOKRATES.
Reading edition
Origen. Philosophumen. p. 11, ed. Miller; Plutarch ap. Eusebium Præp. Evang. i. 8, xv. 23-46-47; Stobæus Eclog. i. p. 510. Anaximander supposed that eclipses of the sun and moon were caused by the occasional closing of these apertures (Euseb. xv. 50-61). The part of the sun visible to us was, in his opinion, not smaller than the earth, and of the purest fire (Diog. Laert. ii. 1).
Eudêmus, in his history of astronomy, mentioned Anaximander as the first who had discussed the magnitudes and distances of the celestial bodies (Simplikius ad Aristot. De Cœlo, ap. Schol. Brand, p. 497, a. 12).