[327] Ibid.
[328] Manilius, Astron., iii., 53:—
“Principium rerum et custos natures latentûm
Cum tantas strueret moles per inania mundi:
*****
Aëraque et terras flammamque undamque natantem
Mutua in alternum præbere alimenta juberet.”
[329] Lucretius, Of the Nature of Things, Book i., translated by Creech.
[330] Cicero, Acad. Quæst., i., 2; Galen, de Elementis.
[331] Diogenes Laertius, Life of Democritus.