During his vacation in the Alps in Northern Italy, Zenit reports the Pope as having delivered an address regarding the merits of observing silence.
"In reality, only in silence does man succeed in hearing in the depth of his conscience the voice of God, which really makes him free."
Further, the Pope used this theme to level a subtle criticism on the modern world, which he sees as failing to make time for silence and communion with God, something which could be a powerful force for peace.
In avoiding silence, we run away from productive confrontation of our conscience, distracting ourselves from the change and growth God demands of us. Silence and patient self-examination are integral parts of the path to liberation from the constraints of this world.