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
Dead Souls trilogy's second part, Gogol destroyed it shortly before his death. Although the novel ends in mid-sentence (like Sterne's "Sentimental Journey"), it is usually regarded as complete in the extant form. The original title, as shown on the illustration (cover page), was "The Wanderings of Chichikov, or Dead Souls. "Poema"", which contracted to merely "Dead Souls". In the Russian Empire, before the emancipation of the serfs in 1861, landowners had the right to own serfs to farm their land. Serfs were for most purposes considered the property of the landowner, who could buy, sell or mortgage them, as any other chattel.