Is there such a thing as a self, something that makes you who you are? Or is the self just a convenient fiction? Would the world be a better place if we all stopped believing in selves? These are some of the questions we're asking in this week's show.

Prominent philosophers go head to head in this New York Review of Books piece. Thomas Nagel writes a critical review of Daniel Dennett's new book From Bacteria to Bach and Back: The Evolution of Minds.