Preaching was close to the heart of Saint Alphonsus because he knew that preachers could stir up in people a deep love for God. In "Simple, Heartfelt Words," Father Billy uses letters and other writings from the doctor of the church to discuss Alphonsus's most important ideas on preaching. He also presents Alphonsus's critique of preachers in his day and the approach to preaching he intended for members of his order.