Tua nunc terris, tua lumina toto sparge mari;
seu nostra dolos molitor opertos sive externa manus,
primus mihi nuntius esto.
Cast now thine eyes upon the land, upon all the sea;
whether it be men of my own land or strangers
that are planning secret treachery,
be first to bear me news.
– Argonautica, Book V, 246-49
Valerius Flaccus