Traditionally, morality meant altruism, care for others, the world beyond the self. Today's icon, though, is the "selfie," the image of ourselves we present to others by way of smartphones and social media. In this episode, Rabbi Jonathan Sacks explores the impact this has had on how we see ourselves and live our lives.

Contributors: Jean Twenge, Professor of psychology at San Diego State University; David Brooks, political and social commentator and author; Students from Graveney School in London and Queens' School in Hertfordshire.

Producer: Dan Tierney Series Editor: Christine Morgan