“But on her side the Colchian ceases not to foam with hellish poisons and to sprinkle all the silences of Lethe's bough: exerting her spells she constrains his reluctant eyes, exhausting all her Stygian power of hand and tongue.”
Contra Tartareis Colchis spumare venenis
cunctaque Lethaei quassare silentia rami
perstat et adverso luctantia lumina cantu
obruit atque omnem linguaque manuque fatigat
vim Stygiam.
Source: Argonautica, Book VIII, Lines 83–87