Raymond Winling, born in1924 and Emeritus Professor of Theology at Strasbourg, crowns with the present volume a career of studies which have included an edition of Gregory of Nyssa's Oratio catechetica for this same series. It is the second section of a first book by Gregory in that long controversy which he undertook as spiritual legatee of his brother Basil. Eunomius was their opponent. He had produced a statement and defence of his doctrine of God, a First Apology, and Basil had answered this in his Adversus Eunomium to which Eunomius replied in a Second Apology. Gregory took up his deceased brother's cause in his First Book (it was to be followed by two more and a Refutation of Eunomius' Confession of Faith) whose full text with French translation Raymond Winling has now presented in this definitive edition: ‘definitive’, since it uses the Greek text established by Werner Jaeger but now for the first time improved through appended addition in French of the passages preserved by Peter of Callinicus in his Against Damian. Important too is the incorporation into the printed text of Gregory's own chapter headings whose ordering was, I think, obscure to Werner Jaeger because of the lacunae now filled from the Syriac of Peter of Callinicus. Werner Jaeger printed the chapter headings but confined them to the introduction. Gregory's words now resume their proper place. Questions of historical and doctrinal background have been dealt with in Raymond Winling's edition of the first division of Gregory's Contre Eunome I (SC dxxi, 2008). Here Gregory had treated of Basil, defending him à l'outrance against Eunomius' insulting charges of incompetent and libellous controversy and ending with a dignified tribute to Basil's book which starts with the wise thought that it is not always une bonne idée to try to improve on someone's theology. That whole section to 146 (Jaeger's numbering) displays Gregory at what I think most would agree as his least pleasing. Then 147 onwards deals with issues of substance in the literal as well as the figurative sense since ‘substance’, ousie, is the main point in dispute. I do not like Gregory's literary style with its involved periods but I do not think that he deliberately confuses and because he recites Eunomius' words the argument and the rebuttal are usually clear. The French translation, so far as I have checked it, is reliable. The notes seem to me (these things are matters of taste) adequate: enough to tell the readers how the discussion evolves and where parallels and special words are to be found. The learned and distinguished editor does not say whether he has the rest of Gregory's lengthy Contre Eunome on the stocks. If he has, I wish him bon voyage with its rapid completion.