In an interview at Harlem's famed Apollo Theater, Stephen Colbert, host of "The Late Show with Stephen Colbert" and best-selling author, discusses his nightly talk show, the times we live in and his deep-rooted Catholic faith. Stephen opens up about the nervousness he felt in taking David Letterman's old time slot and how his intention for the show guided it to the top of the ratings. Stephen also reveals how he keeps his ego in check, why love is the most important thing we have, and what he thinks is the "last, best hope of mankind." In this special edition of "Oprah's SuperSoul Conversations," you'll hear Oprah and Stephen's full interview, featuring more than 15 minutes of bonus content not included in Part 2 of the OWN special "Oprah at the Apollo."