hitchens debated friends and foes on the topic of religion on this program. christopheried in 2011. now one of his closest friends joins us to discuss his new book that is beautifully written. i guess, just tell us, give us a pitch for the book. i think it's a short book. it's an airplane ride, a couple of rides. you'll get something out of it. what do you get about a guy's dying year who is an atheist? >> thank you. i hope one of the things people will get from this is we live in callture that is increasingly factualized. here was christopher hitchens and myself who managed not only to debate one another but to enjoy each other's company and a friendship. >> well, what was he searching for. everybody gets something from someone else and you learn from other people and your friend, especially. was he using you as a final sort of due diligence about whether he was right or wrong about god? >> that's a good way of putting it. christopher, after his diagnosis with esophageal cancer that he knew to be a death sentence, he took two lengthy road trips with me. here he was, it'