My actions caused the death of my wife, unspeakable damage to two universes. I lost my career and my sanity. All because I tried to help another Peter. I may be the only man who can help you, but I also am the only man who cannot help you.

Walter

I have been separated from my family, and you of all people must know how desperate I am to get back.

Peter

Do you think that it's possible the Cortexiphan trials stunted my emotions?

Olivia

Walter: Tell Agent Broyles that science has no price tag!
Astrid: I'm sure he'll be very pleased to hear that.

Peter: Thank you.
Lincoln: It's my job.
Peter: No, I mean thank you for treating me like a human being. I haven't been getting that a lot lately. I appreciate it.

That's quite a quandary. Perhaps we're looking for a ghost after all.

Walter

You know, I've been investigating fringe events for three years. I never thought I'd become one.

Peter

Yeah, because every 32 year old man need a friend to chaperone him while he is underwear shopping.

Peter

I was important to you, wasn't I? I mean, the other version of me. Because I see the way you look at me when you think I'm not aware.

Olivia

Clearly, I'm in the wrong place. All the people that I know and love are somewhere else. I just gotta figure out how to get home.

Peter

Astrid: This goes into your neck.
Peter: Of course it does.

Astrid: Here! Walter calls this the Walter Bishop Faraday harness. He wanted me to tell you that.
Peter/Olivia: So how do I put it on?

Fringe Season 4 Quotes

You know they did a study on sarcastic people, and they get more illnesses than other people. Something to do with negative energy.

Robert Danzig

Fauxlivia: You know, being you and living your life, only me more homesick for my universe.It must be hard to develop trust in people when all you've got is yourself. It must be terribly lonely.
Olivia: Just because you have walked in my shoes, don't you think for a moment that you know me.
Fauxlivia: Yeah, keep telling yourself that.