Palpatine: Become my apprentice. Learn to use the dark side of the Force.
Anakin Skywalker: I will do whatever you... ask. Just help me save Padmé's life. I can't live without her.
Palpatine: To cheat death is a power only one has achieved, but if we work together I know we can discover the secret.
Anakin Skywalker: I pledge myself to your teachings.
Palpatine: Good. Good. The Force is strong with you. A powerful Sith you will become. Henceforth you shall be known as Darth... Vader.
Palpatine (to Anakin): If one is to understand the great mystery, one must study all its aspects. Not just the dogmatic narrow view of the Jedi. If you wish to become a complete and wise leader, you must embrace a larger view of the Force. Be careful of the Jedi, Anakin. Only through me can you achieve a power greater than any Jedi. Learn to know the dark side of the Force and you will be able to save your wife from certain death.
Palpatine: The Sith and the Jedi are similar in almost every way... including their quest for greater power.
Anakin Skywalker: The Sith rely on their passion for their strength. They think inwards - only about themselves.
Palpatine: And the Jedi don't?
Anakin Skywalker: The Jedi are selfless. They only care about others.
Palpatine: Good, Anakin. Good. Kill him. Kill him now.
Anakin Skywalker: I shouldn't.
Palpatine: Do it. (Anakin kills Dooku) You did well, Anakin. He was too dangerous to be kept alive.
Anakin Skywalker: Yes, but he was an unarmed prisoner. I shouldn't have done that. It's not the Jedi way.
Palpatine: It is only natural. He cut off your arm, you wanted revenge...