On the surface, silence was simple: we didn't speak unless it was necessary. But what was the point of silence? The point was, we learned, not mere silence, not silence to preserve some sort of order, but something much greater. In silence the idea was to recollect ourselves, to place ourselves more squarely in the presence of God than we would if people were talking to us all the time. We could pray, we could meditate, we could contemplate.
This was my first conscious experience of listening to Gaia, even though I didn't call it that then or hear an actual voice... I have come to learn that there are many ways of listening. One may hear an internal or external voice, feel a body sensation, or simply just "know" with that intuitive understanding that is beyond words. However, I continue to describe this experience as "listening" because we have forgotten how to be silent and listen to ourselves, one another, and the earth.