Noctes Atticae
Gellius, Aulus
Gellius, Aulus. The Attic Nights of Aulus Gellius. Rolfe, John C., editor. Cambridge, Mass.; London: Harvard University Press; William Heinemann, 1927 (printing).
Exinde, his scientiae studiis ornati, ad perspicienda mundi opera et principia
naturae procedebant ac tunc denique nominabantur φυσικοί.