The Aeneid by Virgil Book 6 Page 28

This is the land of Shadows, of Sleep and drowsy Night; living bodies I may not carry in the Stygian boat. And in truth it brought me no joy that I took Heracles on his journey over the lake, or Theseus and Piritho�s, though sons of gods and invincible in valour. The one by force sought to drag into chains, even from the monarch’s throne, the warder of Tartarus, and tore him off trembling; these essayed to carry off our queen from the chamber of Dis.” In answer the Amphyrsian soothsayer spoke briefly: “No such trickery is here; be not troubled; our weapons offer no force; the huge doorkeeper may from his cave with endless howl affright the bloodless shades; Proserpine may in purity keep within her uncle’s threshold. Trojan Aeneas, famous for piety and arms, descends to his father, to the lowest shades of Erebus.