Something to Keep in Mind
Remember: talking to yourself isn’t a sign of madness. Most of human “thought” is just self-referential monologue. The difference is that normal people repress the expression and don’t actually verbalize, while schizophrenics have something wrong with the internal censor that prevents the interior self-discussion from being spoken.
That scene in “Austin Powers: International Man of Mystery” where Austin’s interior monologue is spoken aloud as a consequence of cryogenic trauma? It was meant as an absurdity, but it’s more accurate than either the writers or the audience likely realized.