Sendhil Ramamurthy is credited but only does the opening voiceover.

Mohinder: (opening voiceover) There are many ways to define our fragile existence. Many ways to give it reason. But it is our memories that shape its purpose and give it context. A private assortment, of images, fears, loves, regrets. We alone chose the importance of each. Building our own unique histories one memory at a time. Hoping the ones we chose to remember don't betray or trap us. For it is the cruel irony of light that we are destined to hold the dark with the light, the good with the evil. That is what separates us, makes us human. and in the end, what we might fight to hold on to.

Claire: Freedom is what you do with what's been done to you.
Samuel: Sounds deep.
Claire: Sartre. College.
Samuel: I always thought freedom was just another word for nothing left to lose.
Claire: That, too.

Hiro: Good Citizen. I am a humble knight from the Starship Enterprise. I seek my first officer, Sancho Panza.
Ramen Vendor: Miso, soy or salt?
Hiro: I do not require sustenance. I require transport to Sancho Panza. He is my sidekick.
Ramen Vendor: No sidekick. Noodles.

Ian Michaels: She's different. Like me.
Samuel: Not different. Special.

Peter: My brother Nathan taught me a lot. He taught me... how to ride a skateboard when I was a kid, how to hook a marlin, he taught me how to catch a baseball. Those are all things usually a father'll teach his son. But Dad wasn't around. So it was Nathan. And I wish to hell it would've been my father, because Nathan didn't take it easy. He would throw it high, or he'd throw it wide, and I would yell at him. I'd tell him to throw it right at me, but he'd say to me, "That's not how it's gonna come at you at a game, Pete." I used to think he was just being a big brother and he was picking on me. But now I understand. He just wanted me to be ready... for anything. I'm ready, brother. For whatever comes.

Samuel: I always thought "Freedom was just another word for 'nothing left to lose' "

Samuel's "Freedom [is] just another word for 'nothing left to lose'" is a quote from the song Me and Bobby McGee, written by Kris Kristofferson and most notably covered by Janis Joplin.

When Hiro ports back to the open-space market in Tokyo, his various delusional comments reference Star Trek ("The Starship Enterprise"), Don Quixote/The Man of La Mancha ("Sancho Panza", "Dulcinea"), Star Wars ("A Jedi's work", "Princess", "Light Saber", "C3PO"), Highlander ("There can be only one"), Battlestar Galactica ("Citizens of Caprica", "The Cylons") and Arthurian legend ("Lancelot").