The glyph/code spells out JONES.

Walter: The water was still running in the sink. She must have come to her decision while she was washing the dishes.
Peter: What?
Walter: I knew almost immediately. Even before I found the body. The car's engine was still running. There was no note. There didn't need to be. We had just lost our only child. I should have mourned with her, even then. But instead I let her grieve alone so that I could focus on finding a way to the alternate universe to save someone else's child. 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 could help you, but I'm also the only man who cannot help you.

Lincoln: Just out of curiosity, um, if this thing closes while I'm still crossing through, what happens?
Peter: It'll cut you in half. I killed a guy like that one. Don't worry, he was a bad guy.

Agent Lee: You and your pal murdered two Fringe agents. Every cop in the city is going to be looking for him.
Lincoln: Right. That's what happened. We came all this way to kill two Fringe agents. That's brilliant. No wonder you're a detective.

Elizabeth Bishop: That's what got me through it, you know. I told myself that if another universe exists, and there's got to be more, then somewhere you grow up and be happy and fall in love. Somewhere you would have a life, just... just not here.

Peter: I was wrong about you. You're not the man I thought you were.
Bishop: You are exactly the man I thought you would be.

Peter: Hey, Scarecrow, come on. The flying monkeys are coming.

In the 1939 movie The Wizard of Oz, based on the novels by L. Frank Baum, the Scarecrow travels with Dorothy to obtain a brain. The flying monkeys serve the Wicked Witch and attempt to stop Dorothy and her friends.