For sheer adventure, exploring the inner space of the human spirit has to equal the exploration of outer space. Inner space holds a realm of existence not readily apparent when we are in the grip of the strident external world. A powerful launching vehicle for the discovery of the realm within is silence. It is in the vessel of silence that inner transformation can occur.
Certain redwood groves are holy places for me because they capture silence and light. The forest is so dense as to exclude all external noise. It is possible to ignore their silence until a single bird sings within. When the single song has died not only do I realize I have heard a sound exquisite in its simplicity, but also that I have heard it so precisely because it was embedded in pure silence.