A book is a product of a pact with the Devil that inverts the Faustian contract, he'd told Allie. Dr Faustus sacrificed eternity in return for two dozen years of power; the writer agrees to the ruination of his life, and gains (but only if he's lucky) maybe not eternity, but posterity, at least. Either way (this was Jumpy's point) it's the Devil who wins.
Faustus, who embraced evil and shunned righteousness, became the foremost symbol of the misuse of free will, that sublime gift from God with its inherent opportunity to choose virtue and reject iniquity. What shall a man gain if he has the whole world and lose his soul, (Matt. 16: v. 26) - but for a notorious name, the ethereal shadow of a career, and a brief life of fleeting pleasure with no true peace? This was the blackest and most captivating tragedy of all, few could have remained indifferent to the growing intrigue of this individual who apparently shook hands with the devil and freely chose to descend to the molten, sulphuric chasm of Hell for all eternity for so little in exchange. It is a drama that continues to fascinate today as powerfully as when Faustus first disseminated his infamous card in the Heidelberg locale to the scandal of his generation. In fine, a life of good or evil, the hope of Heaven or the despair of Hell, Faustus stands as a reminder that the choice between these two absolutes also falls to us.