This volume publishes the papers delivered at a Consultation that was held at the Monastery of Bose, Italy (14-20 October 2002) and organised by the Cardinal Suenens Center of Cleveland. Twenty visiting scholars from Europe, North America, and South Africa, representing a cross section of Christian communities - Orthodox, Roman Catholic, Anglican, Lutheran, Reformed, Methodist, Mennonite, Pentecostal and Quaker, explore the multi-faceted dimensions of the work of the Holy Spirit which contribute to the goal of Christian Unity. Apart from the introductory paper of Cardinal G. Danneels, Brussels-Malines, the papers are grouped around four main themes: (1) 'The Holy Spirit and Unity' according to diverse Christian Traditions (W. Kasper, Rome; J. Zizioulas, Athens; A. Hastings, Natal; A.P.F. Sell, Milton Keynes; H. Harder, Winnipeg); (2) 'The role of the theology of the Holy Sprit in the ecumenical movements reflected in its different dialogues' (M.A. Fahey, Milwaukee; J. Fameree, Louvain-la-Neuve; L.F. Fuchs, New York; H. Meyer, Kehl-Marlen; D. Carter, Bristol; M. Tanner, London); (3) 'Classic questions' of a theology of the Holy Spirit (R. Del Colle, Milwaukee; A. Denaux, Leuven; B. Bobrinskoy, Paris; G. Wainwright, Durham); and (4) 'Current concerns' (A. Riggs, Washington; C.M. Robeck, Pasadena; J. Haughey, Chicago). The volume concludes with the Bose Statement 'The Holy Spirit, the Church, and Christian Unity', conceived by the participants of the Conference as a message of faith and hope addressed to their churches.