The sacred is plainly a mystery of consciousness – using the word MYSTERY to signify not a problem that can be intellectually solved, but a process of awakening and transformation that must be acted out in order to be experienced, and experienced if one is to make it one's own.
God is the friend of silence. See how nature -- trees, flowers, grass -- grow in silence; see the stars, the moon, the sun, how they move in silence... The more we receive in silent prayer, the more we can give in our active life. We need silence to be able to touch souls. The essential thing is not what we say, but what God says to us and through us. All our words will be useless unless they come from within.