Very dense. Very rewarding. Anatolios does the hard work of tracing the development of Nicene theology on Nicene's own (variegated) terms. The clear and balanced approach of these church fathers is incredibly refreshing. While reading this work, I most appreciated about their approach to theology (1) the functional humility that accompanies a clear Creator-distinction (and the epistemological implication that exhaustive knowledge of the Trinity is impossible for finite creatures, but true knowledge of the Trinity is possible for those made in the image of--and self-revealed to by--the Trinity), (2) the emphasis on receiving the revelation of the Trinity the way the Trinity self-reveals: Triune mission (i.e., we know anything we know about the nature of the Trinity by virtue of the Triune God acting to create, speak, incarnate, fill, save, etc. We know who God is because of what God says and does, not because we can have direct access to "godness" and can render a judgment about whether or not God fits such a criteria), and (3) the intermingling of Trinitarianism, Christology, soteriology, pneumetology, and eschetology (i.e., we know God to be Triune because of the mediation--soteriological AND epistemological--of the incarnate Son, who incarnated by the Spirit in order to unite himself to fallen mankind, redeem him, and adopt him into Triune love through the Spirit).
Much more can be said, but these points alone are fodder for everlasting meditation.