Tony Campolo (Ph.D., Temple University) is professor emeritus of sociology at Eastern University in suburban Philadelphia, a media commentator on religious, social, and political matters, and the author of a dozen books, including Revolution and Renewal, Let me Tell You a Story, and 20 Hot Potatoes Christians Are Afraid to touch. Dr. Tony Campolo es profesor emeritus de Sociologia en el Eastern College de St. Davids, estado de Pennsylvania. Es Tambien fundador y presidente de la Evangelical Association for the Promotion of Education, una organizacion educativa que ayuda a ninos y adolescentes "en situacion de riesgo", en las ciudades de Estados Unidos de America y en otros paises en desarrollo. El Dr. Campolo tiene escritos mas de 20 libros y es un orador popular tanto a nivel nacional como internacional. Ael y su esposa, Margaret, residen en Pennsylvania. Brian D. McLaren (MA, University of Maryland) is founding pastor of Cedar Ridge Community Church, an innovative, nondenominational church in the Baltimore-Washington region. He's also a senior fellow with emergent (www.emergentvillage.org), a growing generative friendship of missional Christian leaders.