Sam and I recently read Teresa of Calcutta: Serving the Poorest of the Poor for school. It prompted me to pick up for myself In the Heart of the World: Thoughts, Stories, and Prayers, a collection of Mother Teresa's written words. This particular passage has drawn me back to it over and over.
"To make possible true inner silence, practice:
Silence of the eyes, by seeking always the beauty and goodness of God everywhere, and closing them to the faults of others and to all that is sinful and disturbing to the soul.
Silence of the ears, by listening always to the voice of God and to the cry of the poor and the needy, and closing them to all the other voices that come from fallen human nature, such as gossip, tale bearing, and uncharitable words.
Silence of the tongue, by praising God and speaking the life-giving Word of God that is the truth, that enlightens and inspires, brings peace, hope, and joy and by refraining from self-defense and every word that causes darkness, turmoil, pain, and death.
Silence of the mind, by opening it to the truth and knowledge of God in prayer and contemplation, like Mary who pondered the marvels of the Lord in her heart, and by closing it to all untruths, distractions, destructive thoughts, rash judgments, false suspicions of others, vengeful thoughts, and desires.
Silence of the heart, by loving God with our heart, soul, mind, and strength, loving one another as God loves; and avoiding all selfishness, hatred, envy, jealousy, and greed."