If you sell your soul to the devil, don’t expect to make a profit.

uh...okay. The legend of Faust is the classic work where a person sells his soul to the devil for power/knowledge/pleasure. Goethe has Faust make a wager with the Mephistopheles: show me the good life (pleasure, power, knowledge, whatever) it will never be enough to make me stop striving, to make me want to linger. If you can do that my soul is yours. To me it reads a _lot_ like our contract with AI.