Memory and the Past Quotes in Cloud Atlas

How we cite our quotes: (Part.Chapter.Paragraph)

Quote #1

"I dreamt of a... nightmarish cafe, brilliantly lit, but underground, with no way out. I'd been dead a long, long time. The waitresses all had the same face. The food was soap, the only drink was cups of lather." (2.7.15)

What about memories of the future? How do those work? Perhaps it's due to eternal recurrence, the trope Vyvyan Ayrs's last composition is named after. He's just remembering something from the last time the universe spun around, right? Or is it Groundhog Day? We're not sure.

Quote #2

[...] The dizzying vividness of the images of places and people that the letters have unlocked. Images so vivid [Luisa] can only call them memories. (3.23.2)

Luisa has a few memories from a possible past life. Is she actually remembering things Frobisher lived through, or do the letters just unlock familiar feelings? Can we "live" through the stories and writings of others?

Quote #3

A swarm of déjà vu haunts Luisa as she stuffs her belongings into her overnight bag. Robert Frobisher doing a dine and dash from another hotel. (3.38.1)

Here's another one of those past-lives moments. At this point, Luisa has read the letters. Are they just so vivid that she's thinking of them? Or did she really live as a bisexual male composer in another life?