An original contribution to Newman studies, the book has an interdisciplinary focus, drawing from recent work in social epistemology, virtue epistemology, and cognitive science. It also takes up issues relevant to the philosophy of religion, epistemology of religious belief, systematic theology, ecumenical dialogue, and studies in John Henry Newman.

John Henry Newman and the Development of Doctrine provides an analysis of the attempts by John Henry Newman to account for the historical reality of doctrinal change within Christianity in the light of his lasting conviction that the idea of Christianity is fixed by reference to the dogmatic content of the deposit of faith. It argues that Newman proposed a series of hypotheses to account for the apparent contradiction between change and continuity, that this series begins much earlier than is generally recognized and that the final hypothesis he was to propose, contained in An Essay on the Development of Christian Doctrine, provides a methodology of lasting theological value and contemporary relevance. Stephen Morgan establishes the centrality of the problem of change and continuity in theology, to Newman's theological work as an Anglican, its part in his conversion to Catholicism and its contemporary relevance to Catholic theology. It also surveys the major secondary literature relating to the question, with particular reference to those works published within the last fifty years. Additionally, Morgan considers the legacy of the Essay as a tool in Newman’s theology and in the work of later theologians, finally suggesting that it may offer a useful methodological contribution to the contemporary Catholic debate about hermeneutical approaches to the Second Vatican Council and post-conciliar developments in doctrine.

Reinhard Hütter’s main thesis in this third volume of the Sacra Doctrina series is that John Henry Newman, in his own context of the nineteenth century, a century far from being a foreign one to our own, faced the same challenges as we do today; the problems then and now differ in degree, not in kind. Hence, Newman's engagement with these problems offers us a prescient and indeed prophetic diagnosis of what these problems or errors, if not corrected, will lead to—consequences which have more or less come to pass—and, furthermore, an alternative way which is at once thoroughly Catholic and holds contemporary relevance. The introduction offers a survey of Newman’s life and works and each of the subsequent four chapters addresses one significant aspect of Christianity that is not only contested or rejected by secular unbelief, but also has a counterfeit for which not only Christians, but even Catholics have fallen. The counterfeit of conscience is the “conscience” of the sovereign subject (Ch. 1); the counterfeit of faith is the “faith” of one who does not submit to the living authority through which God communicates but rather adheres to the principle of private judgment in matters of revealed religion(Ch.2); the counterfeit of doctrinal development is twofold: (i) paying lip service to development while only selectively accepting its consequences on the grounds of a specious antiquarianism and (ii) invoking development theory to justify all sorts of contemporary changes according to the present Zeitgeist (Ch. 3). Finally, the counterfeit of the university are all those “universities” whose end is not to educate and thereby to perfect the intellect, but rather to feed more efficiently the empire of desire that is informed by the techno-consumerism of today (Ch. 4). The book concludes with an epilogue on Hütter’s journey to Catholicism.

In The Personalism of John Henry Newman, Crosby shows the reader how Newman finds the life-giving religious knowledge that he seeks. He explores the "heart" in Newman and explains what Newman was saying when he chose as his cardinal's motto, cor ad cor loquitur (heart speaks to heart). He explains what Newman means in saying that religious truth is transmitted not by argument but by "personal influence."