At her Harvard commencement speech, "Harry Potter" author JK Rowling offers some powerful, heartening advice to dreamers and overachievers, including one hard-won lesson that she deems "worth more than any qualification I ever earned."

At 18, Natalie Warne's work with the Invisible Children movement made her a hero for young activists. She uses her inspiring story to remind us that no one is too young to change the world.

New York Times pundit David Brooks describes a plan to rebuild broken communities and offers actionable steps to live a more meaningful life. (Audio only)