Pere De Lubac's volume, now almost two years old, has only within the past year received the attention it deserves. However, the prolonged silence of theologians is perhaps the most significant tribute that can be paid to one of the most remarkable books of our era. For the almost overwhelming array of erudition massed by Pere de Lubac, the extensiveness of his treatment, and the revolutionary aspects of his conclusions demand long periods of uninterrupted reading, reflection and research, before the theme of the book can be grasped in all its richness, and before a solid and fair evaluation can be made.