This collection, marking the centenary of Avery Dulles's birth, makes an entirely distinctive contribution to contemporary theological discourse as we approach the second century of the cardinal's influence, and the twenty-first of Christian witness in the world. Moving beyond a festschrift, the volume offers both historical analyses of Dulles's contributions and applications of his insights and methodologies to current issues like immigration, exclusion, and digital culture. It includes essays by Dulles's students, colleagues, and peers, as well as by emerging scholars who have been and continue to be indebted to his theological vision and encyclopedic fluency in the ecclesiological developments of the post-conciliar Church. Though focused more on Catholic and ecumenical affairs than interreligious ones, the volume is intentionally outward-facing and strives to make clear the diverse and pluralistic contours of the cardinal's nearly unrivaled impact on the North American Church, which truly crossed ideological, denominational, and generational boundaries. While critically recognizing the limits and lacunae of his historical moment, it serves as one among a multitude of testaments to the notion that the ripples of Avery Dulles's influence continue to widen toward intellectually distant shores.