logo

69 pages 2 hours read

C. S. Lewis

Mere Christianity

Nonfiction | Essay Collection | Adult | Published in 1952

A modern alternative to SparkNotes and CliffsNotes, SuperSummary offers high-quality Study Guides with detailed chapter summaries and analysis of major themes, characters, and more.

Book 3, Chapters 5-8Chapter Summaries & Analyses

Book 3: "Christian Behaviour"

Book 3, Chapter 5 Summary: "Sexual Morality"

Shifting the discussion to sexual morality, Lewis states that chastity is a universal rule of Christianity. It differs from the social rule of modesty, which is culturally specific and dictates that (for instance) a woman from the Pacific Islands can expose more of her body than a woman from Europe. Breaking these standards of modesty is only wrong in the Christian sense if it’s done to provoke lust or anger, and Lewis urges more tolerance where standards of propriety are concerned, since these vary not only culturally but also generationally. He believes that the best approach is to believe in the good of others and make those around us as comfortable as possible.

Nevertheless, Lewis recognizes that chastity is the least popular Christian virtue. The rule that one must either be married and faithful or else completely abstinent may seem contrary to human instincts. Lewis’s response, however, is that the sexual instinct has “gone wrong” (95) as a result of humanity’s fallen nature, and far exceeds its purpose (to reproduce, and to keep the population at a relatively stable level). As an example, Lewis compares sexual desire to hunger, noting how strange we would find it if there were “stripteases” in which platters of food were slowly unveiled before an audience. He also denies that the existence of things like stripteases is a sign of “sexual starvation”; in fact, contraceptives have made sexual indulgence safer and less costly, while public opinion about sexual matters has become more relaxed.

Returning to the comparison to hunger, Lewis observes that, while gluttony is a sin, it is rare to encounter perversions of the appetite for food. This, however, cannot be said for perversions of the sexual appetite. Furthermore, Lewis argues, these perversions can’t simply be the result of repression, because over the first several decades of the 20th century, people have been more encouraged to talk about sex than ever before. He therefore believes that calls to normalize the human sexual appetite are misguided, unless they’re simply referring to sex as a pleasurable act that also serves a reproductive function. This is in fact the Christian perspective, which “thoroughly approves of the body” (99), and does not regard sex as inherently sinful at all. However, Lewis believes that what people often mean when they say “sex is nothing to be ashamed of” is “the state into which the sexual instinct has now got is nothing to be ashamed of” (99), and this is not a conclusion he agrees with.

Lewis clarifies that he does not hold individual people to blame for this state of affairs; rather, it’s a byproduct not only of humanity’s fallen state, but also of consumerism, which plays to people’s sexual appetites in order to profit off of them. Nevertheless it’s up to us to overcome such temptations, and mustering the desire to do this is difficult for three reasons. First is the amount of propaganda promoting sexual indulgence and equating it with ideas of health, normality, and youth; here Lewis again clarifies that while sex itself is normal, giving in to all sexual impulses is not. Secondly, people may assume that Christian chastity is an impossible ideal. To this, Lewis responds that moral perfection in any area is impossible for mere humans, but that this doesn’t excuse us from trying. Thirdly, people imagine that sexual repression is harmful, but “repression” is a misunderstood term that does not mean to deny or resist a conscious urge, but is instead concerned with psychological material suppressed in early childhood; these desires surface in obscure ways that seem to have nothing to do with sex of any kind.

All that said, Lewis clarifies that sins of the flesh are the mildest sins; the gravest sins are those of a purely spiritual nature such as hatred, condescension, pettiness, and the lust for power. Lewis concludes that our human selves have to compete with our Animal selves and Diabolical selves, with the Diabolical self being the worst of the two.

Book 3, Chapter 6 Summary: "Christian Marriage"

Lewis now turns to the subject of Christian marriage, though he acknowledges that he has never been married and that Christian doctrines on the subject are unpopular. This is not a subject that he is particularly eager to delve into, but he recognizes that it is important.

Lewis explains that in Christianity, a husband and wife constitute a single organism not simply during sex, but at all times. This is why sex outside of marriage is sinful: it tries to isolate sexual union from the broader unity God intends. Marriage is also meant to be lifelong; though Lewis acknowledges that different churches vary in their views on divorce no church sees divorce as anything but a measure of last resort.

Because marriage involves vows, it also can't be separated from the Christian idea of justice. Lewis suggests that those who do not intend to keep such vows would perhaps be better living together unmarried. He knows that this is not a traditionally Christian statement but he believes it preferable to perjury. Of course, Lewis believes that couples that are in love have a natural inclination to bind themselves to promises. From a Christian perspective, however, this tendency is all the more evidence that such promises are part of God’s plan, and shouldn’t be thrown aside once initial infatuation has passed. Lewis further contends that there are benefits to marriage that don’t involve the feeling of “being in love,” such as providing a home for any children. Furthermore, while “being in love” is wonderful, it is a feeling, and feelings cannot be relied upon to last. However, ceasing to be in love is not the same as ceasing to love. Lewis elaborates that love is a commitment that should be retained during difficult periods.

Lewis knows that, because he is not married, people may discount his views. He accepts this, but says that such individuals should make sure that they are not judging him based on novels and films, which often create unrealistic expectations of being in love forever, or suggest that “falling in love” is something beyond personal control. This mindset causes people to leave existing relationships and embark on new ones, only to find that the initial excitement fizzles out once again; what’s more, it encourages people to view passing infatuations as something there’s no point trying to resist, thus turning them into something more serious than they originally were. By contrast, those who choose to abide by long-standing commitments will find new kinds of joys opening up to them.

Lewis then distinguishes between the Christian conception of marriage and the extent to which Christians should try to force these views on others, especially with regard to divorce. Since most British people are not Christians, Lewis feels they cannot be expected to live Christian lives. He suggests that there should be two distinct kinds of marriage: a legal form that could be dissolved more easily, and one governed by the Church.

Finally, Lewis turns to the promise that Christian wives make to obey their husband, arguing that there must be a “head” in a marriage in case disagreements arise; in these instances, someone must have the deciding vote. As for why that person should be the husband, Lewis questions whether there is a serious wish for this to be otherwise, noting that even women who wish to be the head of their own household criticize other women who are in that very same position. Furthermore, Lewis believes that a wife is more likely to prioritize the needs of her family, and that the husband is therefore better equipped to make decisions that impinge on the outside world.

Book 3, Chapter 7 Summary: "Forgiveness"

Lewis observes that while people tend to think forgiveness is a good concept in the abstract, in practice it might be even more disliked than chastity. He imagines readers asking, “I wonder how you’d feel about forgiving the Gestapo if you were a Pole or a Jew?” (115), and acknowledges that he wonders the same thing. Nevertheless, the Christian injunction to forgive remains the same.

To that end, Lewis suggests that it is best to start out by forgiving those closest to us. We might also try to understand what it means to love our neighbor as we love ourselves. Lewis notes that he does not feel any particular affection for himself, so it follows that one need not feel fond of their neighbor. Likewise, forgiving enemies does not mean concluding that they are not so bad after all; we can hate the things that our enemies do but still forgive them, in much the same way that we can hate many things about ourselves while still wishing ourselves the best. As Lewis puts it, “Just because I loved myself, I was sorry to find that I was the sort of man who did those things” (117). This is the attitude he advises adopting towards others: one that pities them for their faults and hopes for their reform.

Lewis then clarifies that forgiveness does not entail an absence of punishment. Regarding the stipulation, “thou shalt not kill,” Lewis distinguishes between killing (e.g. the death penalty or deaths in combat) and murder, arguing that the commandment applies only to the latter.

On that note, Lewis anticipates readers asking what separates Christian morality from the ordinary view. In response, he reiterates that as Christians believe in eternal life, the emphasis must always be on the kind of people we are making ourselves into. Although there are times when it’s acceptable (and perhaps even necessary) to punish people for their actions, we must strive not to take pleasure in it, or to allow our feelings of hatred or resentment to flourish.  

Book 3, Chapter 8 Summary: "The Great Sin"

Lewis turns to pride or self-conceit, which serves as the root of every other vice, and which is the lynchpin of Christian morality. It’s also universal, both in the sense that everyone is guilty of it, and in the sense that no one will admit to it (which is itself symptomatic of our self-love).

To support his claims, Lewis notes that pride is competitive, in that it involves wanting to be better—more successful, more powerful, more attractive, etc.—than others. In other words, pride is inherently intertwined with feelings of resentment, envy, and hatred. It also automatically places us at odds with God, who is “in every respect immeasurably superior to [ourselves]” (124). On that note, Lewis observes that those who claim superiority to others on the basis of their own religiosity aren’t really worshipping God at all, and it is a measure of how pernicious pride is that it can take on the trappings of Christianity. Lewis suggests that it is deeply misguided to appeal to an individual’s pride—a “spiritual” vice—in an attempt to stop them from engaging in the other, “animal” vices (125).

Lewis specifies that taking pleasure in being praised is not the same as pride, because in these moments, what makes us happy is the knowledge that we’ve pleased someone else; problems only arise when we start thinking how wonderful we must be to have elicited such a response. Relatedly, Lewis notes that vanity—that is, seeking the admiration of others—is actually a relatively trivial form of pride, since it reflects a concern for the opinions of others. Indifference to public opinion can be admirable if it reflects a greater concern with God’s opinion, but in many cases this indifference is simply narcissistic in nature.

Lewis also tackles the question of what it means to be proud of someone else, arguing that if “pride” in this context means warm admiration, it’s of course not sinful. However, he warns that we should take care not to love or admire anyone more than God—not because God is “proud,” but because He wants people to overcome the burden of pride and embrace humility as a positive feeling. As a result, a truly humble person likely won’t seem self-effacing or obsequious; they may just seem cheerful, modest, and as though they find it easy to enjoy life.

Book 3, Chapters 5-8 Analysis

In this section, Lewis moves further into territory that was already controversial at the time he was writing, and has likely only grown more controversial since: the nature of marriage, the justifiability of violence, etc. Readers are of course free to disagree with some of the points made in this section, or, indeed, the book as a whole; in fact, Lewis is adamant that he is here speaking only about Christian morality, and that Christians should not impose those morals on others. It’s also again fair to question whether Lewis’s interpretation of Christianity is influenced by cultural context or preexisting beliefs. Perhaps most obviously, Lewis delivered the radio addresses from which he developed Mere Christianity during WWII. His remarks about death in combat take place against this backdrop, which is perhaps why the topic of warfare is one area where Lewis seems to contradict himself. On the one hand, he argues that killing—though sometimes necessary—should never be enjoyed. In fact, he argues that the fact that it is ever necessary is itself deplorable: “Even while we kill and punish we must try to feel about the enemy as we feel about ourselves—to wish that he were not bad, to hope that he may, in this world or another, be cured” (120). At the same time, he bemoans the “semi-pacifism you get nowadays which gives people the idea that though you have to fight, you ought to do it with a long face” (119). This tension becomes more understandable when we consider not only Lewis’s own service during WWI, but also the fact that his WWII addresses were intended to boost morale during a very uncertain era in British history.

Another area in which Lewis’s views perhaps reflect culture and history as well as Scripture involves the relationship between husband and wife. Certainly, Lewis‘s reading of the Bible as endorsing the husband’s authority is the one that has historically predominated, but modern theologians have noted that other verses promote a more egalitarian view of marriage (more broadly, the Bible contains many passages that seem to contradict one another, so as much as Lewis wishes to avoid “picking and choosing” a certain amount of it is arguably inevitable). In any case, the argument Lewis proposes as to why marriage might be arranged this way is drawn not so much from Christian thought as it is from a particular view of gender that emerged in the 18th and 19th centuries—specifically, the ideology of “separate spheres,” which posited that men and women were naturally inclined to hold distinct but complementary roles in the public and private arenas, respectively.

With all that said, it’s worth noting that Lewis’s views on these thorny issues are often nuanced. For example, despite generally insisting on strict standards of chastity, Lewis suggests that it might be better for couples who do not feel they can promise fidelity to live together out of wedlock. This is in keeping with Lewis’s broader understanding of sinfulness, which, as he notes in Chapter 8, ultimately stems from pride. By this, Lewis doesn’t mean simply arrogance but rather an underlying self-absorption that informs much of the way we think and act; at its core, pride is an idea that we don’t need anyone or anything but ourselves, God included. In this sense, it’s humanity‘s "original sin,” because it’s the idea that leads us to believe that we know what’s best for ourselves and can do whatever we want; as Lewis puts it in Book 2, “What Satan put into the heads of our remote ancestors was the idea that they could ‘be like gods’— could set up on their own as if they had created themselves—be their own masters—invent some sort of happiness for themselves outside God, apart from God. And out of that hopeless attempt has come nearly all that we call human history—money, poverty, ambition, war, prostitution, classes, empires, slavery” (49). This is why, in Lewis’s estimation, there are no half-way measures for those who are Christian; the problem isn’t so much that God won’t forgive pride or any of the sins that flow from it, but rather that pride is in and of itself a barrier to knowing God. 

blurred text
blurred text
blurred text
blurred text