THE INTRODUCTION--A. CHRIST FOUNDED ONLY ONE CHURCH--Scripture--Christian Agreement--B. THE EXISTING MULTIPLICITY--General lines of division--Seven main groups--Three different 'polities'--Power of 'institutionalism--The 'third force'--Word Confessionalism--Missionary expansion and disunity--THE EVILS OF DIVISION--Contrary to the Will of Christ--Obstacle to charity--Scandal to the world--Hindrance to preaching the Gospel--THE ECUMENICAL MOVEMENT--The World Council of Churches--Union of Churches--CHAPTER ONE (Catholic Principles of Ecumenism)--A. THE CATHOLIC CHURCH DESCRIBED--Christ's redemption and the Church--The Eucharist and the Church--The Holy Spirit and the Church--The Apostolic Mission of the Church--Collegiality--The 'pilgrim' Church--B. THE RELATION OF SEPARATED BRETHREN TOT HE CHURCH--A thorny question--A misunderstanding corrected--Imperfect Communion--Endowments individual and corporate--C. THE CATHOLIC APPROAH--Signs of the times--Ecumenism and 'Conversions'--What do separated Brethren lack?--Unity in Variety--'Dialogue'--CHAPTER TWO (The Practical side of Ecumenism)--A. ECUMENISM MUST BE THE CONCERN OF ALL CATHOLICS--B. REFORM AND RENEWAL--The admitted need--Renewals in process--The agonies of Reform--Can the Church Repent?--Triumphalism, Clericalism, Legalism--C. PRAYER IN COMMON--The Background--A General Principle--Intercommunion--'Spiritual Ecumenism'--D. TRUTH AND ITS EXPRESSION--Illustrations from the early Church--Words change in meaning--Progress in understanding--Unintelligible terminology--A hierarchy of truths--False irenicism--E. CO-OPERATION WITH SEPARATED BRETHREN--CHAPTER THREE (Churches and Ecclesiastical Communities Separated From the Roman Apostolic See--A. CATHOLICITY, APOSTOLICITY AND THE ORTHODOX--The Eastern Catholic Churches--'Latinization' of the Church--Ultimate destiny of the Catholic Eastern Churches--B. SOME GENERAL CHARACTERISTICS OF ORTHODOXY--Locality and nationality--Their concept of an indivisible unity--Different liturgical forms and languages--Devotion to the Mother of God--Heroic steadfastness in persecution--The emigration from Russia--The Pan-Orthodox conferences at Rhodes--Signs of courtesy and charity--C. THE DEBT OWED BY THE WEST TO THE EAST--In general--Liturgy--Fourth century Latin esteem of the East--Translations from Greek to Latin--Monasticism--England's debt to the East--Latin ignorance of the East--Eastern Mariological influence--Christian mysticism--Orthodox teaching on the Eucharist, the Blessed Trinity and the Church--D. DIFFERENCE IN THEOLOGICAL EXPRESSION BETWEEN EAST AND WEST--E. THE SOLEMN DECLARATION ABOUT THE RIGHTS OF TH EASTERN ORTHODOX--II. Separated Churches and Ecclesiastical Communities in the West--A. THE GENERAL STAND POINT OF THIS SECTION--B. THE WORLD COUNCIL OF CHURCHES AND THE CATHOLIC CHURCH--Evidence of goodwill--They are not comparable entities--Dr Visser't Hooft on the third session of the Vatican Council--The last week of the third session--The Catholic Church and membership in the World Council of Churches--C. THE ANGLICAN COMMUNION--Anglican traditionalism, patristic learning and 'comprehensiveness'--D. 'ENDOWMENTS' POSSESSED BY THESE BRETHREN--In general--The Bible, sacraments and worship--Clear evidence of Christian virtue--E. DIFFERNECES BETWEEN THEM AND THE CATHOLIC CHURCH--Desire for frankness--Structure of the Church--The Bible and the Church--The role of the Virgin Mary--The Eucharist and the sacrament of Orders--Moral teaching of the Gospel and general ethos--CONCLUCION: REASONS FOR HOPE