Week 1 — FreeRead the Preface of Mere Christianity
Discussion question your group will work through:
1.Lewis uses the image of a hallway leading into separate rooms to describe 'mere Christianity.' What is the hall, and what are the rooms? Why does he think it matters to get people into the hall before worrying about which room they enter?
At a glance: this is a 29-week study and discussion guide for Mere Christianity by C.S. Lewis, with 176 questions organized by reading assignment. Week 1 is free to read, with no card required.
Mere Christianity began as a series of BBC radio talks delivered by C. S. Lewis during World War II, when the nation desperately needed a clear, confident articulation of the Christian faith. Lewis — a former atheist and Oxford don — was uniquely suited for the task. His goal was not to argue for any particular denomination, but to lay out the common hall of Christian belief that all major traditions share: the "mere Christianity" of his title. The book moves in four parts, from the universal moral law as evidence for God, to the nature of God and humanity's problem, to the person and work of Christ, and finally to the practical challenge of becoming the kind of person God designed you to be.
This study guide is designed to walk you through Mere Christianity week by week, one chapter at a time. Each week, read the assigned chapter (they are short — most take only 15–20 minutes), take a few minutes to journal your reactions, questions, and any points of resistance or delight, and then bring those reflections into conversation with your small group or a trusted friend. If you are working through the guide alone, allow extra time to sit with the discussion questions before moving on. The goal is not speed but transformation — Lewis himself said he was not trying to win arguments but to describe a way of life.
By the end of this guide, you will have built a coherent framework for understanding why Christianity makes sense, what it actually claims about God and humanity, and how its truths are meant to reshape you from the inside out. Whether you are a skeptic testing the faith, a new believer seeking foundations, or a longtime Christian whose belief has grown dusty, Lewis's argument has a way of making the familiar feel freshly astonishing. Come with honest questions. Lewis was not afraid of yours.
Before diving into the argument, Lewis pauses to explain what he is and is not trying to do — and that clarity of purpose shapes everything that follows.
1.Lewis uses the image of a hallway leading into separate rooms to describe 'mere Christianity.' What is the hall, and what are the rooms? Why does he think it matters to get people into the hall before worrying about which room they enter?
2.He deliberately avoids advocating for any particular denomination. Do you find this approach reassuring or frustrating? What might be gained — and lost — by focusing only on what all Christians share?
3.Lewis admits that some of his positions will offend everyone at some point. He sees this as a sign he is being honest rather than merely diplomatic. Do you think that's a fair standard? Can you think of a belief you hold that genuinely offends people on both sides of an argument?
a.Have you ever softened a conviction to avoid upsetting someone? What happened?
b.How does Lewis's posture here model a kind of intellectual courage you'd want to develop?
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Read Book I, Chapter 1 of Mere Christianity ('The Law of Human Nature')
1.Lewis begins with the observation that when people quarrel, they appeal to a standard they both assume the other person knows — 'That's not fair,' 'You promised.' What is he trying to show with this simple, everyday observation?
Read Book I, Chapter 2 of Mere Christianity ('Some Objections')
1.The first objection Lewis takes up is that the Moral Law is just herd instinct. How does he distinguish between a moral impulse and a moral law? What is the analogy he uses about two different impulses (such as helping someone in danger vs. self-preservation)?
Read Book I, Chapter 3 of Mere Christianity ('The Reality of the Law')
1.Lewis argues that the Moral Law is not simply a description of how humans behave but a *prescription* of how they ought to. What is the difference, and why does it matter for his argument about God?
Read Book I, Chapter 4 of Mere Christianity ('What Lies Behind the Law')
1.Lewis presents two broad views of the universe: the Materialist view (matter and energy, nothing more) and the Religious view (something behind the facts). In your own words, what is the essential difference between these two positions?
Read Book I, Chapter 5 of Mere Christianity ('We Have Cause to Be Uneasy')
1.Lewis says he has been 'putting the boot in' — deliberately making the reader feel the weight of the Moral Law's condemnation before offering any relief. Why does he think this sequence matters? What is wrong with offering comfort too soon?
Read Book II, Chapter 1 of Mere Christianity ('The Rival Conceptions of God')
1.Lewis opens Book II by distinguishing between Pantheism (God is everything, or the sum of reality) and Theism (God made the world and is distinct from it). What are the practical differences between these two views for how we think about good and evil?
Read Book II, Chapter 2 of Mere Christianity ('The Invasion')
1.Lewis describes the Christian story as 'enemy-occupied territory.' What does this metaphor capture about the human condition and about God's response to it? What might be lost with a gentler metaphor?
Read Book II, Chapter 3 of Mere Christianity ('The Shocking Alternative')
1.Lewis presents the famous 'Liar, Lunatic, or Lord' trilemma. What is the argument, and what is it designed to rule out? In your own words, why does Lewis think the 'just a great moral teacher' option is not available?
Read Book II, Chapter 4 of Mere Christianity ('The Perfect Penitent')
1.Lewis frames the problem this way: a man who is in debt cannot pay what he doesn't have; a man who has wronged God cannot give back what he's taken. He needs help from outside. How does this frame the need for the Atonement differently from simply 'needing forgiveness'?
Read Book II, Chapter 5 of Mere Christianity ('The Practical Conclusion')
1.Lewis describes three ways Christ's 'good infection' (as he calls it) is passed on: through baptism, belief, and the Lord's Supper. He doesn't ask us to fully understand *how* these work, but to use them. What is the analogy he draws to eating food without understanding nutrition? Do you find this analogical approach helpful?
Read Book III, Chapter 1 of Mere Christianity ('The Three Parts of Morality')
1.Lewis uses the fleet-of-ships analogy to describe the three departments of morality: relations between ships, the internal workings of each ship, and the purpose of the whole fleet. What are the three corresponding dimensions of human morality?
Read Book III, Chapter 2 of Mere Christianity ('The "Cardinal Virtues"')
1.The four Cardinal Virtues are Prudence, Temperance, Justice, and Fortitude. Lewis says they are 'cardinal' because everything else hinges on them ('cardo' means hinge). Before reading further in the chapter, can you define each one? How do your definitions compare to Lewis's?
Read Book III, Chapter 3 of Mere Christianity ('Social Morality')
1.Lewis states that the New Testament gives almost no direct political program, and he is deliberately reticent about translating Christianity into specific policy. Why does he take this position? Do you agree with his restraint, or do you think Christianity has more specific social implications than he allows?
Read Book III, Chapter 4 of Mere Christianity ('Morality and Psychoanalysis')
1.Lewis argues that psychoanalysis and Christianity are not rivals but operate on different levels. Psychoanalysis deals with the material of our instincts and complexes; Christianity deals with what we *do* with that material. What is the distinction he is drawing, and why is it important?
Read Book III, Chapter 5 of Mere Christianity ('Sexual Morality')
1.Lewis uses the analogy of an audience that goes wild watching a strip-tease act with food to introduce his argument about the state of sexual appetite in modern culture. What is he suggesting about the relationship between the appetite and the culture that feeds it?
Read Book III, Chapter 6 of Mere Christianity ('Christian Marriage')
1.Lewis distinguishes between 'being in love' (a feeling that comes and goes) and the commitment of marriage. What does he say about the relationship between the two, and why is this important for understanding the Christian view of marriage?
Read Book III, Chapter 7 of Mere Christianity ('Forgiveness')
1.Lewis begins by saying forgiveness sounds fine in the abstract until you actually have someone to forgive — a neighbor who has wrecked your life, a nation that has done monstrous things. How does his opening move the discussion out of the theoretical and into the real?
Read Book III, Chapter 8 of Mere Christianity ('The Great Sin')
1.Lewis identifies Pride as the great sin — the root of every other vice. He says it is essentially competitive: we are not proud of having something so much as proud of having *more* of it than the next person. Do you find this competitive dimension in your own experience of pride?
Read Book III, Chapter 9 of Mere Christianity ('Charity')
1.Lewis insists that 'charity' in the Christian sense means love — not just generosity with money. He says Love (in the sense of willing the good of another) is a virtue, not a feeling, and therefore it can be commanded. Why does it matter whether love is primarily a feeling or a choice?
Read Book III, Chapter 10 of Mere Christianity ('Hope')
1.Lewis says that hope — longing for the eternal world — is not a form of escapism but one of the things a Christian is meant to do. He argues that people who have contributed most to the world have been precisely those who were most focused on the next. Who are the examples he has in mind, and do you find this claim persuasive?
Read Book III, Chapter 11 of Mere Christianity ('Faith')
1.Lewis defines Faith (in a first sense) as the art of holding on to things your reason has once accepted, in spite of your changing moods. Why does he say this takes courage, and what does it suggest about the relationship between faith and emotion?
Read Book III, Chapter 12 of Mere Christianity ('Faith' — the second part)
1.Lewis distinguishes between faith as intellectual assent and faith as the total self-surrender he describes here. Why does he say that the virtuous pagan (someone who works very hard at being good) may actually be further from salvation than someone who knows they cannot manage it at all?
Read Book IV, Chapter 1 of Mere Christianity ('Making and Begetting')
1.Lewis distinguishes between 'making' and 'begetting.' A man makes a statue; he begets a child. The statue is made of different stuff; the child is of the same kind as the father. How does this distinction apply to the relationship between God and human beings — and to the relationship between God the Father and God the Son?
Read Book IV, Chapter 2 of Mere Christianity ('The Three-Personal God')
1.Lewis argues that prayer is the place where we discover the Trinity in practice — we speak to the Father, through the Son, with the Spirit. How does his description of prayer as being caught up into a divine exchange between Father, Son, and Spirit make prayer feel different from one-way communication?
Read Book IV, Chapter 3 of Mere Christianity ('Time and Beyond Time')
1.Lewis argues that God does not experience time the way we do — he does not live in a 'succession of moments' but sees all moments simultaneously, as we see a landscape spread out before us. How does this resolve the apparent problem of God 'foreknowing' our free choices?
Read Book IV, Chapter 4 of Mere Christianity ('Good Infection')
1.Lewis revisits the idea of the Son of God as the source of Zoe — the divine life — and argues that through Christ this life is 'catching.' What does the infection metaphor capture that a more formal theological explanation might miss?
Read Book IV, Chapters 5 through 11 of Mere Christianity ('The Obstinate Toy Soldiers,' 'Two Notes,' 'Let's Pretend,' 'Is Christianity Hard or Easy?,' 'Counting the Cost,' 'Nice People or New Men,' and 'The New Men')
1.In 'The Obstinate Toy Soldiers,' Lewis describes the Incarnation as God becoming a wooden soldier in order to turn wooden soldiers into real people. What does this earthy image capture that more technical atonement language might obscure?
Review your notes from all sections of Mere Christianity. You may want to re-read the Preface and the final chapter of Book IV
1.At the beginning of the guide you were asked to write down your biggest question or area of doubt about Christianity. Pull that out now. Has it been answered, deepened, or replaced by a different question? What has the journey through this book done with it?
How many weeks is the Mere Christianity study guide?
This study guide covers Mere Christianity in 29 weeks, with week-by-week discussion questions, reading references, and closing prayers for each session.
How many discussion questions are included?
The complete guide includes 176 discussion questions across 29 weeks — an average of 6 questions per week, designed for group conversation.
Can I use this guide for a book club?
Yes — the questions are written for group discussion and work well for small groups, book clubs, church studies, and couples reading together.
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