History of the Peloponnesian War
Thucydides
Historia Belli Peloponnesiaci. Haase, Friedrich, translator. Paris: Firmin Didot, 1869.
At Syracusani statim portum praevehebantur intrepide et ejus ostium claudere cogitabant, ne Athenienses jam, etiam si vellent, clam iis exire possent.