Book excerpt: A beloved modern-day saint, St. Teresa of Calcutta continues to be a source of inspiration over twenty years after her death. She gave God her complete yes and became one of the most well-known and inspiring women of the twentieth century. Fr. Cantalamessa, Preacher to the Papal Household since 1980, invites us to say yes to God’s voice in our lives and overcome the obstacles that can distract or discourage us along the way.