Directions for this purpose, written on a gold plate, have been found in a tomb at Petilia, and near Lebadeia, at the oracle of Trophonius, which was counted an entrance to the lower world, the two springs Mnemosyne and Lethe were shown (Pausanias ix.
His passion for the stage completely engrossed him; he tried his hand both at dramatic criticism and at dramatic authorship. His first dramatic piece, Lethe, or Aesop in the Shades, which he was thirty-seven years later to read from a splendidly bound transcript to King George III.
This thought begins to appear in literature in the end of the 5th century B.C., when Aristophanes (Frogs, 186) speaks of the plain of Lethe.
Lake Lethe comes next - a broad basin enclosed by walls 90 ft.