In this brief but scholarly study, the sources of the new religious communities in western Europe are seen as lying in (1) the monastic movement in the Church, and (2) ""the ecumenical spirit which is renewing Christianity in our time"". The author with her contributions to the religious thought of the present, through her translations of Barth, Brunner, and others, her own writings on the life of prayer, and her leadership in ecumenical conferences and studies, is thoroughly equipped to write this little volume. The first part of the book gives a concise, interpretative account of the development of western monasticism, down to the revival of the ""religious"" life in the Church of England. Then such now communities as Iona, St. Julian's, and Lee Abbey, in Great Britain, and Continental communities as Taize, Grandchamp, and the Marienschwesternschaft, are described. A chapter on New Roman Catholic Movements follows; and implications of these movements for New Patterns of Christian Living concludes the study. The reader may ask whether monasticism is an adequate source for the divergent and creative trends to be discerned in these communities today.