“[Obi-Wan’s spirit approaches Luke]
Luke: Why didn’t you tell me? You told me Vader betrayed and murdered my father.
Obi-Wan: Your father… was seduced by the Dark Side of the Force. He ceased to be Anakin Skywalker and *became* Darth Vader. When that happened, the good man who was your father was destroyed. So what I told you was true… from a certain point of view.
Luke: A certain point of view?
Obi-Wan: Luke, you’re going to find that many of the truths we cling to depend greatly on our own point of view….”
Excellent life lesson. Never forget it.