stephen brill and dr.nuel discuss the health care system and mark krotov talks about the decision to release the senate intelligence committee report on torture. for a complete television schedule booktv.org. booktv, 48 hours of nonfiction books and authors. television for serious readers. >> host: walter isaacson, who is>> walker percy? >> guest: he was one of my original heroes mentor.d uncle by marriage, one of those things, so we called him uncle walker. we used toim go across lake pontchartrain from new orleans where i grew up, and we'd go fishing on a lazy river over there, and ann percy was a friend of ours, and we couldn't figure out what her dad did. out what ann's dad did. what's your dad do? a writer. and it wasn't until the movie goer came out in the early 960s -- 1960s, and i was 9 or 10 years old, and i go oh a writer that's something you can be when you grow up just like a fibberman, a doctor an engineer. and and so i took sort of an enter in, you know, dr. percy, uncle walker. and, you know