Silence is not simply the absence of noise. It is within us, in the inner citadel that great writers, thinkers, scholars and people of faith have cultivated over the centuries. It characterizes our most intimate and sacred spaces, from private bedrooms to grand cathedrals - those vast reservoirs of silence. Philosophers and novelists have long sought solitude and inspiration in mountains and forests. Yet despite the centrality of silence to some of our most intense experiences, the transformations of the twentieth century have gradually diminished its value. Today, raucous urban spaces and a continual bombardment from different media pressure us into constant activity. We are losing