A fascinating study of the underlying reasons for the disagreement over the clause “and the Son” in the Western version of the Niceno-Constantinopolitan creed, which contributed to the schism between Eastern and Western Christians. Coetzee argues that there has been a great deal of misunderstanding of the positions of each tradition by the other, partly due to the fact that East and West imbue certain key words, such as ‘person’ and ‘unity’, with different meanings which Coetzee believes come from different understandings of Hellenic philosophy. Against this backdrop, Coetzee sets about clearing up some of the misunderstandings.