Silence as a spiritual practice is much more than being able to sit still without talking for thirty minutes or longer. Instead, silence is a quality of presence. The silence we search for is an overall state of being. It is not something we achieve with great effort, either, but something we uncover that is inside us. Somewhere at our core there is a reservoir of silence. . . . To return regularly to this depth, whether in cloistered silence or in line at the grocery, is called "a habit of silence." It is not duration that is important, but the returning time after time to the source within us that, in time, shapes who we are.
Silence has many dimensions. It can be a regression and an escape, a loss of self, or it can be presence, awareness, unification, self-discovery. Negative silence blurs and confuses our identity, and we lapse into daydreams or diffuse anxieties. Positive silence pulls us together and makes us realize who we are, who we might be, and the distance between the two. Hence, positive silence implies a choice, and what Paul Tillich called the "courage to be."