If you're a fiction writer, though, I can tell you how to let people talk through you. Listen. Just be quiet, and listen. Let the character talk. Don't censor, don't control. Listen, and write.
Ursula K. Le Guin (2015). “Steering the Craft: A Twenty-First-Century Guide to Sailing the Sea of Story”, p.100, Houghton Mifflin Harcourt