At the Heart of the Liturgy: Conversations with Nathan D. Mitchell's "Amen Corners," 1991-2012From 1991 to 2012, Nathan D. Mitchell was the author of the "Amen Corner" that appeared at the end of each issue of Worship. Readers of Worship grew accustomed to Nathan's columns as invitations to rethink the practice of Christian worship through a liturgical theology that was interdisciplinary, aesthetic, and attentive to history. With the soul of a poet, Nathan was always on the lookout for the turn of phrase, image, stanza, or metaphor from other