http://www.moviequotedb.com/movies/star-wars-episode-vi-return-of-the-jedi/character_3175.html
Emperor Palpatine quotes
Send the fleet to the far side of Endor... there it will stay until called for.
Soon the rebellion will be crushed and young Skywalker will be one of us.
I wonder if your feelings on this matter are clear, Lord Vader?
Welcome, young Skywalker. I have been expecting you.
Oh no, young Jedi. You will find that it is you who are mistaken - about a great many things.
Everything
that has transpired has done so according to my design. Your friends,
up there on the sanctuary moon, are walking into a trap, as is your
rebel fleet. It was I who allowed the alliance to know the
location of the shield generator. It is quite safe from your pitiful
little band. An entire legion of my best troops await them. Oh, I'm
afraid the deflector shield will be quite operational when your friends arrive. [shows evil, condescending smile]
Now witness the power of this fully armed and operational battle station. Fire at will, commander.
It is unavoidable. It is your destiny. You, like your father, are now mine!
Good.
I can feel your anger. I am defenseless. Take your weapon! Strike me
down with all your hatred, and your journey towards the dark side will
be complete!
Good! Use your aggressive feelings, boy. Let the hate flow through you.
Good! Your hate has made you powerful. Now, fulfill your destiny and take your father's place at my side!
So be it... Jedi.
If
you will not be turned, you will be destroyed! Young fool. Only now, at
the end, do you understand. Your feeble skills are no match for the
power of the dark side! You have paid the price for your lack of vision!
Now, young Skywalker... you will die.