- Dr. Walter Bishop: Hello, William.
- William Bell: Walter.
- Dr. Walter Bishop: I see you've aged.
- William Bell: It appears I'm not the only one!
- Olivia Dunham: Walter, can you walk?
- Dr. Walter Bishop: I can dance if you like. They have absolutely fabulous drugs here, Olivia.
- Dr. Walter Bishop: Peter, you are back now, aren't you? You're not leaving again?
- Peter Bishop: I'm trying to see this your way, Walter. I can't. But... you did cross universes twice to save my life. So that's gotta count for something, right?