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 (painting) produce such a stillness that one would be awed by a knock on the door.” The title, which was conferred upon it by the art dealer Fritz Gurlitt in 1883, was not specified by Böcklin, though it does derive from a phrase in an 1880 letter he sent to the painting’s original commissioner. Not knowing the history of the early versions of the painting (see below), many observers have interpreted the oarsman as representing the boatman Charon who ferried souls to the underworld in Greek mythology. The water would then be either the River Styx or the River Acheron and