Os Guinness speaks on truth in a 14 minute video titled Why Truth Matters. Christian Week editor Doug Koop reacts negatively to Os Guinness's "tough words...". For some clarification of the concept of truth look at H. vander Something-or-other's "What is truth?" - Dr. V
P.S. Some comments about the Second Annual PFC Dinner are (still) forthcoming. I apologize for taking so long.