Quintus Ennius Quotes
That is true liberty, which bears a pure and firm breast.
Ennius, Quintus. Remains of Old Latin, Volume I: Ennius and Caecilius. Edited and translated by E. H. Warmington, Harvard University Press, 1935, p. 385.
Lincoln was referring to the "house divided against itself" speech. His remarks were addressed to friends who were trying to dissuade him from delivering the address.
Quintus Ennius (Latin pronunciation: [ˈkᶣiːnt̪ʊs̺ ˈɛnːijʊs̺]; c. 239 – c. 169 BC) was a writer and poet who lived during the Roman Republic. He is often considered the father of Roman poetry. He was born in Rudiae, formerly a small town located near modern Lecce in the heel of Italy (ancient Calabria, today Salento), and could speak Oscan as well as Latin and Greek. Although only fragments of his works survive, his influence in Latin literature was significant, particularly in his use of Greek literary models.