The 2013 Bogleheads meeting was just held in Philadelphia and the list of panel members was a Who's Who of index investing. Wade Pfau was there and took notes of the comments of the panel members, which included Jack Bogle and William Bernstein amongst others. He published his notes as a series of Tweets and they can be viewed at his blog site which is linked. It contains the current thoughts of many of many leading investment minds and is well worth the read. It is a string of pearls.