Where in brave new world is the quote everyone belongs to everyone at?

The quote "Everyone belongs to everyone else" appears in Aldous Huxley's "Brave New World," primarily in Chapter 3. It reflects the society's ethos of promiscuity and the rejection of individual relationships in favor of collective belonging. This phrase is frequently reiterated by characters to emphasize the importance of community over personal ties, showcasing the novel's themes of conformity and the devaluation of individuality.