The tragical history of doctor faustus
by christopher marlowe (excerpt)

faustus: one thing, good servant, let me crave of thee,
to glut the longing of my heart's desire,„
that i might have unto my paramour
that heavenly helen which i saw of late,
whose sweet embracings may extinguish clean
those thoughts that do dissuade me from my vow,
and keep mine oath i made to lucifer.

mephistopheles: faustus, this, or what else thou shalt desire,
shall be perform'd in twinkling of an eye.

which underlying theme is evident in this passage from a play?
exploitation of nature
the satisfaction of desire
personal sacrifice
conflict between duty and desire