There are plenty of Obi-Wan (ANH)/Palpatine (ROTS) mirrors. IMO these movies are connected backwards, our introduction to the light side being A New Hope, our introduction to the dark Revenge of the Sith. It's interesting that the "meat" or introduction to each side of the force occurs at the start of the OT, but at the end of the PT. ANH- OBI-WAN: You must do what you think is right, of course. ROTS SIDIOUS: Of course you should. But you aren't completely sure of their intentions. ANH- OBI-WAN: Learn about the force, Luke. ROTS- SIDIOUS: Become my apprentice. Learn to use the dark side of the force. ANH- OBI-WAN: Your destiny lies along a different path than mine. ROTS- SIDIOUS: Your fulfilling your destiny Anakin. I like that the Sith attitude towards destiny involves focus on one's self, and an unbroken bond to the Master, while Obi-Wan demonstrates the light by leaving it to the will of the force.