RT Review T1 Speaking the Incomprehensible God: Thomas Aquinas on the Interplay of Positive and Negative Theology. By Gregory P. Rocca, OP. Pp. xxvi + 412. Washington, DC: The Catholic University Press of America, 2004. isbn 0 8132 1367 3. 64.95 JF The journal of theological studies VO 57 IS 1 SP 360 OP 363 A1 Cross, Richard 1964- LA English PB Oxford University Press YR 2006 UL https://ixtheo.de/Record/1783718455 AB According to Aquinas, what God is—his essence—cannot be known by creatures, even those who are permitted to encounter God (metaphorically: to see him) in the beatific ‘vision’. But this view of Aquinas', raises an acute question not only for the theologian but also for every Christian believer: if we cannot know God's essence, how can we successfully talk about him? By means of an exhaustive analysis of all the relevant texts, Rocca attempts to sketch out what he takes to be Aquinas's solution to this problem. K1 Rezension DO 10.1093/jts/flj020