It's not about fate, Walter, yours or mine. It's about changing fate, and protecting our children.

Donald

Windmark: I too feel something. I believe you call it...Hate.
Broyles: The feeling is mutual.

Walter: It's a beautiful name.
Astrid: What is?
Walter: Astrid.

You are my favorite thing, Peter, my very favorite thing.

Walter

So in order to maintain a future without the Observers, you and Michael have to live out your lives in the future.

Peter

Blasted thing. What I wouldn't give for a good old-fashioned tumor-inducing cell phone.

Walter

You can stop checking out my young ass.

Fauxlivia

Fauxlivia: Olivia?
Olivia: It's me. I was in amber for 21 years.

Walter: The sacrifice is hard son, but you're no stranger to it.
Peter: Neither are you, dad. You sacrificed a lot.

Peter: It was on Liberty Island. We closed that bridge 24 years ago. For all we know, the Observers could have invaded as well. We have no way of knowing what happened.
Astrid: Not necessarily. The universe window. Why don't we just have a look?
Walter: Of course. That's brilliant Ashcat! Ha. Peter. Help us with the window.

Fringe Season 5 Episode 12 Quotes

Walter: The sacrifice is hard son, but you're no stranger to it.
Peter: Neither are you, dad. You sacrificed a lot.

Peter: It was on Liberty Island. We closed that bridge 24 years ago. For all we know, the Observers could have invaded as well. We have no way of knowing what happened.
Astrid: Not necessarily. The universe window. Why don't we just have a look?
Walter: Of course. That's brilliant Ashcat! Ha. Peter. Help us with the window.