The book's scope is extraordinary. It traces Western religious and cultural history from roughly 1500 to the present, examining the Reformation, the scientific revolution, the Enlightenment, the Romantic reaction, the development of modern individualism, and the cultural transformations of the twentieth century. Taylor's methodology combines historical narrative with philosophical analysis, producing a work that is simultaneously a history of ideas, a sociology of religion, and a phenomenology of modern spiritual experience.
The book's philosophical core is the analysis of what Taylor calls cross-pressures — the felt pull between closed and open perspectives within the immanent frame. Most contemporary Westerners, Taylor argues, live within these cross-pressures without resolving them. They are not simply believers or unbelievers; they inhabit a space where both options are live, where the sense that there must be more than the humanly constructed coexists with the inability to specify what the more consists in.
The relevance to AI is developed in the Taylor volume of the You On AI Encyclopedia as an extension of Taylor's original argument. The AI amplifier represents the culmination of the immanent frame's tendency to treat meaning as humanly constructed and intelligence as computable. The disenchantment of intelligence — the reduction of thinking to information processing — is the specific form that Taylor's broader disenchantment thesis takes in the age of large language models.
The book received the Templeton Prize in 2007, the Kyoto Prize in 2008, and has generated an extensive secondary literature. It is widely regarded as one of the most important philosophical works of the twenty-first century and has reshaped debates about secularization across philosophy, sociology of religion, theology, and cultural studies.
A Secular Age emerged from Taylor's 1998–1999 Gifford Lectures at the University of Edinburgh, extensively revised and expanded over the subsequent decade. The book draws on Taylor's lifelong engagement with the history of Western religious and philosophical thought, and on his long-standing dialogue with Catholic theology, continental philosophy, and Anglo-American analytic traditions.
The book has been the subject of multiple edited volumes of critical response, including Varieties of Secularism in a Secular Age (Harvard University Press, 2010) and Beyond the Secular: Essays on Charles Taylor's A Secular Age (Columbia University Press, 2016), and has been widely translated.
Secularization as condition, not decline. The modern situation is not the absence of belief but the presence of new conditions under which all worldviews become contestable.
The immanent frame. The background framework within which modern experience unfolds, bounded by the natural order.
Cross-pressures. The lived experience of being pulled between closed and open perspectives without resolution.
Fullness. The experience of meaning that exceeds naturalistic explanation remains available even within the immanent frame.