Why wish you become Jedi? Well, mostly because of my father, ...
Yoda: Why wish you become Jedi?
Luke: Well, mostly because of my father, I guess.
Yoda: Ahh, father. Powerful Jedi was he. Powerful Jedi.
Luke: How could you know my father? You don't even know who I am. Oh, I don't even know what I'm doing here! We're wasting our time!