Stanislas Dehaene, a French cognitive neuroscientist, provides the primary scientific scaffolding for Maryanne Wolf’s model of the reading brain. As a professor at the Collège de France, his pioneering neuroimaging research has illuminated how the brain learns to read, an unnatural cultural invention. His work gives empirical weight to Wolf’s central claim that the reading circuit is a malleable, epigenetic achievement rather than a hardwired biological faculty.

Two of Dehaene’s concepts are critical to Wolf’s argument. The first is the visual word form area, a region in the brain’s left hemisphere he calls the brain’s letterbox , which becomes specialized for recognizing letters and words. The second is the theory of “neuronal recycling,” which posits that learning to read co-opts and repurposes brain circuits originally evolved for other functions, such as object and face recognition. Together, Dehaene’s ideas explain how the brain makes space for literacy. By grounding her “Circuit du Soleil” metaphor in Dehaene’s empirical neuroanatomy, Wolf establishes that the brain’s reading circuit has a physical reality shaped by experience. This notion supports her warning that the constant attentional demands of digital media can recalibrate recycled circuits, potentially weakening the neural pathways that support fluent, deep reading.

Walter J. Ong, a Jesuit scholar of media and culture, whom Wolf references amid her discussion of the modern shift from print to digital reading. His seminal 1982 book, Orality and Literacy, analyzed how the transition from a primarily oral culture to a literate one fundamentally restructured human consciousness, education, and social organization. By tracing the cognitive changes that accompanied the rise of writing, Ong provided a powerful framework for understanding how communication technologies are never neutral tools but active agents in shaping thought.

Wolf uses Ong’s work as a historical analog for the current technological transition. She draws on his argument that writing externalizes memory and restructures thought away from the associative patterns of oral cultures toward the linear, analytic patterns of literate ones. This provides a historical precedent for her concern that digital media may be externalizing memory even further while promoting a new cognitive style based on skimming and multitasking. However, Wolf also uses Ong’s perspective to argue against a simple print-versus-screen binary. She adopts his insight that intellectual evolution often involves immersion in multiple media. This justifies her central proposal for Designing the Biliterate Brain, which seeks to integrate the deep reading skills fostered by print with the new cognitive capacities of the digital age, allowing readers to be “‘steeped in’ both” (170).

Marshall McLuhan, a Canadian media theorist, provides Wolf with a foundational conceptual framework for arguing that the form of a medium, not just its content, shapes cognition and culture. McLuhan is best known for the aphorism “the medium is the message,” which posits that the characteristics of a communication technology have a greater long-term impact on society than the specific information it conveys (Mcluhan, Marshall. https://web.mit.edu/allanmc/www/mcluhan.mediummessage.pdf, McGraw-Hill, 1964).

Wolf applies this principle directly to her larger debate over digital reading. She uses McLuhan’s contrast between the linear, sequential nature of typography and the simultaneous, all-at-once nature of electronic media to explain the cognitive pressures that digital environments place on deep reading. For Wolf, the design of digital interfaces—which encourages rapid task-switching, skimming, and a focus on immediacy—inherently alters our sense ratios and cognitive habits. McLuhan’s work allows her to argue that the shift to screens is reshaping the way we process information, potentially eroding the patient, linear attention that deep reading requires.

Anne Mangen, a Norwegian literacy professor at the University of Stavanger, provides key empirical evidence for Maryanne Wolf’s claims about the cognitive differences between reading print versus reading on screens. As a leader in the European E-READ network, Mangen conducts experimental studies that directly compare how the materiality of a medium affects comprehension and engagement.

Wolf highlights Mangen’s research to substantiate her concerns about the potential downsides of digital reading. Specifically, she cites Mangen’s study where participants who read a story on paper demonstrated a superior ability to reconstruct the plot’s sequence compared to those who read the same text on a Kindle. Mangen’s work suggests that the haptic and spatial cues of a physical book—the feel of the pages, the sense of where one is in the text—act as crucial supports for memory and comprehension. This experimental evidence strengthens Wolf’s argument that print provides an irreplaceable foundation for developing deep reading skills and justifies her proposal for a print-first approach in early childhood education.

Martha C. Nussbaum, a distinguished philosopher at the University of Chicago, supplies the ethical and civic rationale for Wolf’s argument surrounding Reading, Empathy, and Democracy. Nussbaum’s work on liberal education, particularly in her 1997 book Cultivating Humanity, champions the development of the “narrative imagination”—the capacity to understand the perspectives, feelings, and experiences of others, especially those different from oneself, through literature.

Wolf draws on Nussbaum’s philosophy to connect the private, cognitive act of deep reading to the public good of a functioning democracy. For Wolf, the narrative imagination is precisely what is cultivated through immersive reading. By engaging with complex characters and situations in literature, readers learn to practice the empathy and critical examination essential for responsible citizenship. Nussbaum’s defense of the humanities against purely utilitarian models of education allows Wolf to frame deep reading as a fundamental practice for fostering a compassionate, just, and pluralistic society, rather than an elite hobby or an outdated skill.

Dietrich Bonhoeffer, a German Lutheran pastor and theologian executed for his resistance to the Nazi regime, serves as a powerful historical embodiment of Wolf’s thesis surrounding the transformative powers of reading. Bonhoeffer’s posthumously published Letters and Papers from Prison (1951) were written during his incarceration, a time of extreme physical and psychological pressure.

Wolf presents Bonhoeffer as a testament to the power of deep, reflective reading to sustain moral clarity and social courage. His prison writings depict reading as an “unseen sanctuary”—a cognitive and spiritual space where he could engage with foundational texts, clarify his ethical resolve, and maintain his humanity against a dehumanizing totalitarian force. For Wolf, Bonhoeffer’s work and experience illustrate the ultimate social and civic function of the contemplative life fostered by reading. Her allusion to him offers a real-life representation of how individual reflection, nurtured through deep engagement with the written word, can fortify the conscience needed for collective democratic resistance to tyranny.