So runs the old missionary hymn. And now from that isle of Ceylon comes a vibrant Christian message from one of the native Christian leaders. Thus does the world move on. This book is a penetrating reexamination of the theological basis of the missionary movement, and of the total evangelistic task of the church. The author has been prominent in the ecumenical movement and made one of the leading addresses at the meeting of the World Council of Churches at Amsterdam. American Protestant leaders should welcome this, his first book to be published here.