Ratzinger on Silence in Liturgy

"We are realizing more and more clearly that silence is part of the liturgy. We respond, by singing and praying, to the God who addresses us, but the greater mystery, surpassing all words, summons us to silence. It must, of course, be a silence with content, not just the absence of speech and action. We should expect the liturgy to give us a positive stillness that will restore us. Such stillness will not be just a pause, in which a thousand thoughts and desires assault us, but a time of recollection, giving us an inward peace, allowing us to draw breath and rediscover the one thing necessary, which we have forgotten. That is why silence cannot be simply “made”, organized as if it were one activity among many. It is no accident that on all sides people are seeking techniques of meditation, a spirituality for emptying the mind. One of man’s deepest needs is making its presence felt, a need that is manifestly not being met in our present form of the liturgy. For silence to be fruitful, as we have already said, it must not be just a pause in the action of the liturgy. No, it must be an integral part of the liturgical event." 

Josef Ratzinger, The Spirit of the Liturgy, (SF, CA: Ignatius, 2000), p. 209.