The book re-examines the religious thought and receptions of the Syrian poet Abū l-ʿAlāʾ al-Maʿarrī (d.1057) and one of his best known works - Luzūm mā lā yalzam (The Self-Imposed Unnecessity), a collection of poems, which, although widely studied, needs a thorough re-evaluation regarding matters of (un)belief. Given the contradictory nature of al-Maʿarrī’s oeuvre and Luzūm in particular, there have been two major trends in assessing al-Maʿarrī’s religious thought in modern scholarship. One presented al-Maʿarrī as an unbeliever and a freethinker arguing that through contradictions, he practiced taqīya, i.e., dissimulation in order to avoid persecution. The other, often apologetically, presented al-Maʿarrī as a sincere Muslim. This study proposes that the notion of ambivalence is a more appropriate analytical tool to apply to the reading of Luzūm, specifically in matters of belief. This ambivalence is directly conditioned by the historical and intellectual circumstances al-Maʿarrī lived in and he intentionally left it unsolved and intense as a robust stance against claims of certainty. Going beyond reductive interpretations, the notion of ambivalence allows for an integrative paradigm in dealing with contradictions and dissonance.

The Concept of Unbelief is examined according to the ethical teachings of Immanuel Kant. Kants notion of the idea of God (as a moral postulate) is used as a foil to the agnostic position to further clarify Kants concept of unbelief. This stance by Kant is contrasted with the concept of unbelief in Johann Fichtes Attempt at a Critique of All Revelation.

This is perhaps the most widely read of Michael Novak's books. Belief and Unbelief attempts to push intelligence and articulation as far as possible into the stuff of what so many philosophers set aside as subjectivity. It is an impassioned critique of the idea of an unbridgeable gap between the emotive and the cognitive and in its own way, represents a major thrust at positivist analysis. Written in a context of personal tragedy as well as intellectual search, the book is grounded in the belief that human experience is enclosed within a person to person relationship with the source of all things sometimes in darkness, other tunes in aridity, but always in deep encounter with community and courage. It is written with a deep fidelity to classical Catholic thought as well as a sense of the writings of sociology, anthropology, and political theoryfrom Harold Lasswell to Friedrich von Hayek. This third edition includes Novak's brilliant 1961 article "God in the Colleges" from Harper's a critique of the technification of university life that rules issues of love, death, and personal destiny out of bounds, and hence leaves aside the mysteries of contingency and risk, in favor of the certainties of research, production, and consumption. For such a "lost generation" Belief and Unbelief will remain of tremendous interest and impact. When the book first appeared thirty years ago, it was praised by naturalists and religious thinkers alike. Sidney Hook called it "a remarkable book, written with verve and distinction." James Collins termed it "a lively and valuable essay from which a reflective, religiously concerned reader can draw immense profit." And The Washington Post reviewer claimed that "Novak has written a rich, relentlessly honest introduction to the problem of belief. It is a deeply personal book, rigorous in argument and open ended in conclusions."