Hieroglyphics of Horapollo, tr. Alexander Turner Cory, [1840], at sacred-texts.com
When they would symbolise a man that is eager for good, and who instead of it falls into evil, they portray a CUTTLEFISH; for this fish if it see any other longing to catch it, ejects a black liquid from its belly into the water, so that by these means it is no longer visible, and thus escapes.