<div>Jesus' prayer on behalf of his of followers is "that all may be one. As you, Father are in me and I am in you, may they also be one in us" (John 17:21). <I>No Turning Back</I> illustrates significant developments in ecumenism during the thirty-plus years of ecumenical theologian Margaret O'Gara's own engagement in ecumenical dialogue.<BR><BR> This collection of selected papers from the final fifteen years of O'Gara's work before her untimely death in 2012 aims<BR><BR> to illustrate the broad lines of ecumenism for general readers<BR> to share concrete details of recent ecumenical developments with specialist readers<BR> to encourage both groups of readers in their commitment to the pursuit of full communion among the Christian churches<BR><BR> An invaluable resource for academic and ecclesial specialists in ecumenism, teachers and students of theology and religious studies, Christian ministers, and all educated Christian adults who take seriously Jesus' prayer "that all may be one."</div>