Don't think that those who enter the silence of God are "silent". Nothing could be farther from the truth! Silence is a thunder! You will be able to hear it everywhere. Your nights and days will be filled with it. ...Many confuse silence with solitude. Solitude is being alone with God, waiting for God. But silence is an immense sea into which you enter and never leave. And once you have plunged into this silence, you will always be silent.
Breathing is the connection between the mind and the body. When the mind concentrates on the breath, it focuses attention on the present moment. Breathing is the first step on the path to discover your spiritual nature. As you get the body to breathe correctly, the mind settles down, and that creates fertile ground to develop whatever spiritual nature exists within you.