Since its first publication thirty years ago, Timothy Ware's book has become established throughout the English-speaking world as the standard introduction to the Orthodox Church. Orthodoxy continues to be a subject of enormous interest among Western Christians, and the author believes that an understanding of its standpoint is necessary before the Roman Catholic and Protestant churches can be reunited. He explains the Orthodox views on such widely ranging matters as ecumenical councils, sacraments, free will, purgatory, the papacy and the relation between the different Orthodox churches.