Sonmi-451: To be is to be perceived. And so to know thyself is only possible through the eyes of the other. The nature of our immortal lives is in the consequences of our words and deeds that go on apportioning themselves throughout all time.
Robert Frobisher: This world spins from the same unseen forces that twist our hearts.
Archivist: In your Revelation, you spoke of the consequences of an individual's life rippling through eternity. Does this mean that you believe in an afterlife? In a heaven or a hell?
Sonmi-451: I believe death is only a door. When it closes, another opens. If I cared to imagine a heaven, I would imagine a door opening and behind it, I would find him there.
Old Georgie: The weak are meat, and the strong do eat.
Timothy Cavendish: Two sprained ankles, one cracked rib. Official cause of accident listed on the hospital form: "Pussy."
Zachry: Who tripped the Fall, if not Old Georgie?
Meronym: True-true? The Old Uns.
Zachry: That's just a rope o'smoke. Old Uns got the Smart. They mastered sick and seeds, they make miracles and fly across the sky.
Meronym: True. All true. But they got somethin' else. A hunger in their hearts, a hunger that's stronger than all their Smart.
Zachry: Hunger? For what?
Meronym: A hunger for more.
Dr. Henry Goose: Do you ever get the feeling that the Universe is against ya?
Luisa Rey: You have to do whatever you can't not do.
Archivist: What if no one believes you?
Sonmi-451: Someone already does.
Robert Frobisher: I believe there is a another world waiting for us, Sixsmith. A better world. And I'll be waiting for you there.
Archivist: The report said Commander Chang was killed in the assault.
Sonmi-451: That is correct.
Archivist: Would you say that you loved him?
Sonmi-451: Yes, I do.
Archivist: Do you mean, you are still, in love with him?
Sonmi-451: I mean, that I will always be.
Timothy Cavendish: I will not be subjected to criminal abuse.
An-kor Apis: You, my dear, are proof our efforts were not in vain.
Sonmi-451: But I'm just a dinery server. I was not genomed to alter reality.
An-kor Apis: No revolutionary ever was.
Isaac Sachs: Yesterday, I believe I would never have done what I did today. I feel like something important has happened to me. Is this possible? I just met her, and yet... I have fallen in love with Luisa Rey.
Robert Frobisher: A half-finished book is, after all, a half finished love affair.
Isaac Sachs: Proposition: I have fallen in love with Louisa Rey. Is this possible? I just met her, and yet, I feel like something important has happened.
Archivist: On behalf of my Ministry and the future of Unanimity, I want to thank you for the final interview. Remember, this isn't an interrogation or trial. Your version of the truth is all that matters.
Sonmi-451: Truth is singular. Its "versions" are mistruths.
Robert Frobisher: It's done.
Sonmi-451: Our lives are not our own. From womb to tomb, we are bound to others. Past and present. And by each crime and every kindness, we birth our future.
Chosen answer: Jim Broadbent's publisher character Cavendish has one but it is very easy to miss. It can be seen for a split second when he is about to get into bed as a young man with Ursula. The Comet is the subtle link, but each protagonist is more overtly linked by their actions or what they leave to history. Frobisher reading Adam Ewing's Novel. Luisa Rey reading Frobisher's letters and playing his Cloud Atlas Quartet. Cavendish reading a bound copy of Luisa Rey's Novel while on the train. Sonmi's fellow fabricant watching and being inspired by the movie that was made about Cavendish's adventure. All their actions culminate in the redemption of Tom Hanks in the final story.