Sarah Jane: I waited for you. I missed you.
The Doctor: Oh, you didn’t need me. You were getting on with your life.
Sarah Jane: You were my life.
Sarah Jane: You know what the most difficult thing was? Coping with what happens next. No, with what doesn’t happen next. You took me to the furthest reaches of the galaxy, you showed me supernovas, intergalactic battles and then you just dropped me back on Earth. How could anything compare to that?
The Doctor: All those things you saw, you want me to apologize for that?
Sarah Jane: No! But we get a taste of that splendor and then we have to go back.
The Doctor: Look at you, you’re investigating. You found that school. You’re doing what we always did.
Sarah Jane: You could have come back.
The Doctor: I couldn’t.
Sarah Jane: Why not?