One of Bernanke's last speeches before the expiry of his term as Chairman of the Federal Reserve:
http://www.federalreserve.gov/newsevents/speech/bernanke20131119a.pdf
It's actually a good speech.
Philly Fed president Charles Plosser offers a somewhat different perspective in his speech:
http://www.philadelphiafed.org/publications/speeches/plosser/2013/11-13-13_cato-institute.pdf