Take the 2-minute tour ×  In Episode VI, during their
conversation before meeting the Emperor, Luke asks Vader to give
up on the Emperor and join him instead, at which Vader replies:
"You don't know the power of the Dark Side, I must obey my
master".  What does this mean? Is Vader somehow afraid of the
Emperor?  P.S. Please do not say it was a lie, a deceptive trick
to get Luke to join the Dark Side, because clearly it has
nothing to do with that.  share|improve this question The
Emperor is literally the scariest man in the whole galaxy. Only
a fool wouldn't be afraid of him. –  Richard Jul 23 at 15:22 I
think that Anakin is recalling how crossing the Emperor turned
out for everyone else, regardless of the purity of their
intentions. –  Chris B. Behrens Jul 23 at 15:26 Remember that
scene when the emperor electrocuted the hell out of Vader,
similar to how he did to the Jedi in Episode 3? Do you think
maybe he's afraid of that happening to him? –  phantom42 Jul 23
at 15:27 One possibility might simply be that