Ursula LeGuin's short story, "The Ones Who Walk Away from Omelas," on utilitarianism. First fifteen pages of Franz Kafka, "The Metamorphosis," on same body theory of personal identity. There are already a few anthologies on the subject: Science Fiction and Philosophy: From Time Travel to Superintelligence, Susan Schneider (Editor). Philosophy Through Science Fiction: A Coursebook with Readings by Ryan Nichols, Nicholas D. Smith, Fred Miller.