I recommend the following article
http://www.mises.org/story/1947
Here are the first few paragraphs:
Every few days, a senior Fed official expresses concern regarding the effect of high gasoline prices on inflation. These comments are always phrased in the way a meteorologist would report on the weather, as if the phenomenon in question is an act of nature. Even stranger, these statements imply that only the Fed can hope to save us from this natural disaster.
To invoke another metaphor, this is like the cook who bakes a poison pie and then arrives on the scene of grave sickness, claiming to be the medic with the antidote.
It is the Fed that creates, not cures, inflation. The surest way to stop it is to stop the printing presses—something that a government with massive debt and the desire to sustain a boom is not likely to do.
The Fed’s latest warnings began on September 5, 2005, when the retail price of gasoline climbed to $3.069 per gallon—an increase of 72.6% from early January of this year.
They believe that the decisive factor in the setting of an inflationary spiral is people’s inflationary expectations. This causes workers to press for higher wages. Businesses try to recoup these wage increases by pushing the prices of goods and services higher. This ignites inflation, or so it is believed.
On October 19, 2005, the President of the Dallas Federal Reserve, Richard Fischer, said at a luncheon in Houston, "I will not waver from advocating policy that discourages expectations of higher core inflation. The object will always be to keep inflation at bay, so that the American business machine can keep on humming."
It is inflationary expectations, so they believe, that keep inflation going once inflation is triggered. Also, once expectations are set in motion it is not easy to get rid of them.