For the monk as well as for any human being, the fundamental question at the core of our existence is not whether or not God exists (in fact, a reasonable case for this can be made on purely natural grounds); the real issue is whether or not God has spoken – indeed, speaks – and if so, what does he say?
If God does communicate, then the most pressing issue in our lives is to learn how to hear and to respond to this. Silence is no less a part of this than speech. As in any language, we have to learn to understand what the silence means. (The Monks of New Skete, In the Spirit of Happiness, p. 144-145)