Why Wasn’t C.S. Lewis Catholic?
My favorite authors are G.K. Chesterton, J.R.R. Tolkien, and C.S. Lewis. They’re the inspiration behind my pen name, B.R. Sabo, but more importantly, their writing helped shape my faith. Chesterton and Tolkien were unapologetically Catholic. Lewis, however, never made the jump from Protestantism. Why?
For many Catholics, Lewis feels like a near miss. He defended the Incarnation, the Resurrection, the moral law, the reality of sin, Purgatory, the Real Presence of Christ in the Eucharist, Confession, and even prayer for the dead. He wrote with a sacramental imagination and a reverence that feels far closer to Rome than the modern American Protestantism founded in California.
So why wasn’t he Catholic? The short answer is that Lewis’s story—personal, historical, and cultural—made becoming Catholic far more complicated than it might seem in hindsight.
To understand Lewis, you have to understand England. Lewis lived in a country where anti-Catholic sentiment wasn’t merely theological; it was cultural and political. The English Reformation wasn’t just a church split—it was a national trauma followed by centuries of suspicion. Catholics were long viewed as disloyal, foreign, and un-English. Even into the 20th century, Catholicism carried the odor of superstition, authoritarianism, and excess.
Oxford and Cambridge, where Lewis built his career, were deeply Anglican institutions. The Church of England was the religious expression of the English identity itself. To leave it for Rome felt like leaving one’s country as much as one’s church (Think of the “cultural Catholicism” of some minorities from Central and South America). Lewis once described Anglicanism as “the normal religious background of English life.” Converting to Catholicism would not have been a quiet spiritual adjustment—it would have been a public rupture.
Ironically, recent surveys suggest that among young Christians in England today, Catholics may now outnumber Anglicans. That wasn’t Lewis’s world—but it does highlight how dramatically the ground has shifted since his time.
Lewis later admitted that many of his objections to Catholicism were emotional rather than rational. What he called “deep-seated associations.” Those kinds of assumptions aren’t easily uprooted—I know. I wrestled with the decision for ten years before converting to Catholicism. The struggle wasn’t so much over doctrines or teachings, but over my own assumptions—untangling the familial and social ties of the Protestant world I was raised in—ties that had become part of my identity.
No discussion of Lewis and Catholicism is complete without J.R.R. Tolkien. Tolkien, a devout Catholic, played a crucial role in Lewis’s conversion from atheism to Christianity. Through long walks and late-night conversations, Tolkien helped Lewis see that Christianity was not a myth in the dismissive sense, but a true myth—the story all other stories were pointing toward.
Tolkien hoped Lewis would go further but their friendship reveals why he didn’t. Tolkien grew frustrated with what he saw as Lewis’s resistance to Catholic authority, Marian doctrine, and the papacy. Lewis deeply admired Catholic theology but balked at what he perceived as doctrinal overdevelopment and centralized control. Ironically, Tolkien thought Lewis’s apologetics were too Protestant and too individualistic, while many Protestants today think Lewis sounds suspiciously Catholic. Both are right.
Lewis accepted a remarkable number of doctrines Catholics would recognize:
He believed the Eucharist was more than a symbol.
He believed the sacrament of Reconciliation (confession to a priest) was spiritually beneficial.
He believed in prayer for the dead.
He believed in a purifying process after death that looks strikingly like Purgatory.
He believed authority mattered—just not that authority.
What ultimately held him back wasn’t reverence, tradition, or theology as such. It was the question of where final authority resides. Like many thoughtful Protestants, Lewis could not accept papal authority.
Lewis famously described himself as a “mere Christian,” and that wasn’t a marketing slogan—it was a vocation. He believed his role was to defend the central claims of Christianity, not to referee denominational disputes. He worried that converting to Catholicism would narrow his audience and limit his ability to speak across traditions, and history suggests he might have been right.
Many Protestant friends of mine have never even heard of G.K. Chesterton, despite his brilliance and his influence on Lewis himself. Lewis, on the other hand, has been read and loved by Catholics, Protestants, Orthodox Christians, and seekers alike. His work often serves as a bridge—sometimes even the first bridge—that leads readers toward Rome, even if he himself never crossed the Tiber.
Lewis reminds us that conversion is rarely just about arguments. It’s about history, culture, imagination, and fear—often inherited long before we know how to name them. That was certainly true in my own life. His story shows how grace works patiently, sometimes stopping just short of where we think it should go.
Perhaps this, too, is part of providence. Lewis did not belong to the Catholic Church—but he helped countless souls take their first serious steps toward Christ. For many Catholics like me, that makes him not an outsider, but a fellow traveler whose fingerprints are still on my faith.
Sometimes, the road to Rome runs through Oxford.
