If the heart of prayer is listening, what is it we listen to when we pray? The obvious answer is God's voice, yet great care is needed lest we presume the divine voice is like an ordinary human one. The essence of God's voice is silence...To be silent is to empty oneself of the din of transitory distractions so that one becomes fully receptive to the silence that always and everywhere underlies them. The silence thus cultivated is not a void so much as an expectant readiness, a sensitive receptivity, to the stillness hidden in the noise of daily life.
The Word must be heard in the silence of the heart, the place in which it can be welcomed and given space so that it may become creative. From earliest times the advice given to those who wanted to learn the monastic way was always "to return to your own heart." This is the interior space for which there are so many different concepts: the inner cloister, the poustinia, the cave of the heart. It is simply "the place of God in us" which each of us will understand in a unique and mysterious way.