Dr. Henry Goose: There is only one rule that binds all people. One governing principle that defines every relationship on God's green earth: The weak are meat, and the strong do eat.
Luisa Rey: You seem nervous. Do I make you nervous, Isaac?
Isaac Sachs: No. Actually, just the opposite.
Timothy Cavendish: We cross and re-cross our old paths like figure-skaters.
Vyvyan Ayrs: That's it! The music from my dream.
Robert Frobisher: I call it the "Cloud Atlas Sextet."
Sonmi-451: This is what General Apis asked of me.
Archivist: What, to be executed?
Sonmi-451: If I had remained invisible, the truth would stay hidden. I couldn't allow that.
Archivist: And what if no one believes this truth?
Sonmi-451: Someone already does.
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.