Meaning. We know it when we see it or feel it, but what exactly is meaning? Why do we put so much importance on it? And how do we create it? In this episode, host Lucy Kalanithi revisits audio recordings of her late husband, neurosurgeon Paul Kalanithi — who wrote the #1 New York Times-bestselling memoir When Breath Becomes Air — to reflect on meaning and its underpinnings.