From her testimony before the U.S. Senate Committee on Banking, Housing, and Urban Affairs:
For these reasons, the Federal Reserve is using its monetary policy tools to promote a more robust recovery. A strong recovery will ultimately enable the Fed to reduce its monetary accommodation and reliance on unconventional policy tools such as asset purchases. I believe that supporting the recovery today is the surest path to returning to a more normal approach to monetary policy. Janet L. Yellen, Next Chairman of the Federal Reserve, Nov. 14, 2013
For prospective and truth...
"Credit expansion cannot increase the supply of real goods. It merely brings about a rearrangement. It diverts capital investment away from the course prescribed by the state of economic wealth and market conditions. It causes production to pursue paths which it would not follow unless the economy were to acquire an increase in material goods. As a result, the upswing lacks a solid base. It is not a real prosperity. It is illusory prosperity. It did not develop from an increase in economic wealth [i.e. the accumulation of savings made available for productive investment]. Rather, it arose because the credit expansion created the illusion of such an increase. Sooner or later, it must become apparent that this economic situation is built on sand." Ludwig von Mises, The Causes of Economic Crisis (1931)