Loose monetary policy can get people to use idle resources. But this new economic activity will likely be in the service of bubble industries that don't create real wealth. Moreover, these bubbles create many idle resources of their own when the bust comes.
It is not true that a growing economy will lead to price inflation. A growing economy is an increasingly productive economy and leads to dollars chasing a larger number of goods and services — causing deflation.
The vocational economist is dedicated to a body of ideas — not merely money, fame, or power — and strives to master the system of economic theory as handed down by the great system builders and innovators of the past.