The Forbidden Fountain of Oz food, which occurs most famously in the "forbidden fruit" of the Tree of Knowledge of Good and Evil in the Book of Genesis, but in other contexts too. The idea of water that purges the drinker's memory is also ancient. In Greek mythology it occurs as the river Lethe: the souls of the dead lose their memories of their earthly lives by drinking its water. The same idea can also be found in Eastern and other literatures, as in the "Well of the Waters of Forgetfulness" and other guises. "The 'Drink of Forgetfulness' is found in Greek, Hindu, Norse, and
Isle of the Dead (Zelazny novel) which is responding to a call for help from a friend, Ruth Laris. In the course of investigating her disappearance, he receives another message that he will find all his friends "on the Isle of the Dead". The message is in Pei'an, addressed to "Shimbo" (the name of the Pei'an god connected with Sandow) and signed by "Belion" (Shimbo's traditional enemy in Pei'an mythology). Sandow soon learns that somebody has been stealing the memory records and tissue samples of people who died on Earth. These things are required of everyone who lives on Earth, so they can be recalled to