More at https://www.philosophytalk.org/shows/derek-parfit-and-your-future-self.

The works of Derek Parfit (1942-2017) have had a profound influence on how philosophers understand rational decision-making, ethics, and personal identity. At the heart of Parfit's thinking are questions about how you should relate to your future self, and whether you should treat your future self any differently than other future people. So why does Parfit argue that it's wrong to place a special value on your own survival? What would it take to value others in the way that you value yourself? And how might we harness Parfit's insights to make the world a better place? Josh and Ray's future selves welcome back Parfit's former student David Edmonds, author of "Parfit: A Philosopher and His Mission to Save Morality."