Lawrence "Larry" Summers, former U.S. treasury secretary, speaks during a Bloomberg Television interview on day two of the World Economic Forum (WEF) in Davos, Switzerland, on Thursday, Jan. 23, 2014. World leaders, influential executives, bankers and policy makers attend the 44th annual meeting of the World Economic Forum in Davos, the five day event runs from Jan. 22-25. Photographer: Simon Dawson/Bloomberg via Getty Images