Darkness can be understood to represent emptiness, the complete overcoming of ignorance: the false perception of reality, the illusion of dualism, of anything existing separately. Emptiness, the womb of enlightenment, can be understood symbolically as darkness ... Emptiness is not nothing. Emptiness refers to the radical insight that there is no individually existing, independently arising, separate self. All that is, is in constant flux, rising and falling in relationship to and with something else. Emptiness is the black of starless midnight, imminence, that comes before the pre-dawn of enlightenment, the "clear light", a state of translucence or transparency that is beyond dark and light. This is a radiant black. This is wisdom.
But what is 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. . . . Silence was broken, of course, by people doing things they could not control -- coughing, sneezing, short periods of recreation, the sounds of work being done . . . But all of this merely emphasized the silence rather than disturbing it. Sounds could never absorb this silence; nothing could order it around. It concentrated itself, and from it all else flowed. Silence could never be silenced.
~ from THE TULIP AND THE POPE: A NUN’S STORY by Deborah Larsen