Five C.S. Lewis Quotes on Marriage

I am a huge fan of C.S. Lewis.

Many people first discover Lewis through The Chronicles of Narnia. Especially The Lion, The Witch, and The Wardrobe. Others know him through books like Mere Christianity and The Great Divorce. He was a brilliant writer, a Christian thinker of enormous influence, an Oxford professor, and one of those rare voices who could write about theology, imagination, grief, longing, joy, and ordinary human life with equal depth.

What some people may not know is that Lewis was also married later in life and lost his wife, Joy Davidman, to cancer. Their story was portrayed in the film Shadowlands, in which Anthony Hopkins played C. S. Lewis. It is my favorite film about his life. Because of that experience, Lewis did not write about love merely as an idea. He knew something of “for better, for worse” and “till death do us part.”

Lewis left behind a wealth of wisdom on life and theology, and I have always been fascinated by what he says about love, commitment, desire, and marriage. His words help couples think beyond romance and ask deeper questions about vulnerability, fidelity, affection, vows, and the lifelong pursuit of another person.

Below are my five favorite quotes from C.S. Lewis on marriage.

‍‍1. “To love at all is to be vulnerable.”

"To love at all is to be vulnerable. Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact you must give it to no one, not even an animal. Wrap it carefully round with hobbies and little luxuries; avoid all entanglements. Lock it up safe in the casket or coffin of your selfishness. But in that casket, safe, dark, motionless, airless, it will change. It will not be broken; it will become unbreakable, impenetrable, irredeemable." - C.S. Lewis, The Four Loves.

Lewis understood that love always involves risk. If you love anyone deeply, your heart becomes vulnerable. Marriage certainly carries that kind of risk.

Despite the challenges of marriage, Lewis portrays it as a source of profound joy and fulfillment, especially when spouses are willing to sacrifice for each other and prioritize their commitment above personal wants and desires. Lewis acknowledges that opening oneself up to love entails the risk of heartbreak.

Yet, he suggests that we experience the depth and richness of true love and joy through this vulnerability. He suggests that love can transform individuals, enabling them to fulfill their promises and deepen their connection with each other and God.

Lewis’s warning is that the alternative is far worse. A guarded heart may avoid some pain, but it also becomes closed off from the deepest forms of love. Marriage asks couples to choose vulnerability carefully and faithfully. It asks them to keep opening the heart, even when real love requires humility, forgiveness, patience, and courage.

2. “This quieter love enables them to keep the promise.”

"Being in love first moved them to promise fidelity: this quieter love enables them to keep the promise." - C.S. Lewis, The Four Loves.

In The Four Loves, Lewis makes a helpful distinction between “being in love” and the deeper love that sustains a marriage over time. Being in love may move a couple toward vows, but the quieter, steadier love helps them keep those vows.

Lewis says you need to prioritize commitment. He emphasizes the importance of fidelity and faithfulness in marriage; he recognizes that while the initial emotions of being in love may fade, a more profound, enduring commitment is necessary to sustain a marriage through life's trials and tribulations.

In our culture, people often talk about falling out of love or staying only as long as the relationship feels happy. Lewis points us toward something deeper. Marriage needs affection and romance, but it also needs commitment. The quieter love may not always feel dramatic, but it is the love that keeps showing up.

 3. “Affection is responsible for… durable happiness.”

"Affection is responsible for nine-tenths of whatever solid and durable happiness there is in our lives." - - C.S. Lewis, The Four Loves.

Lewis underscores the significance of affection in nurturing happiness and intimacy within marriage, suggesting that it forms the foundation of enduring love. Genuine affection forms the foundation of enduring love and companionship.

Affection needs to be nurtured, practiced, and protected. Couples can become so busy managing life that they forget to show tenderness. They may still love each other, but the daily signs of love become thin. Lewis helps us remember that affection is not a small thing. Much of the happiness of married life is built through ordinary expressions of warmth and care.

4. “I was made for another world.”

"The Christian says, 'Creatures are not born with desires unless satisfaction for those desires exists. A baby feels hunger: well, there is such a thing as food. A duckling wants to swim: well, there is such a thing as water. Men feel sexual desire: well, there is such a thing as sex. If I find in myself a desire which no experience in this world can satisfy, the most probable explanation is that I was made for another world.'" - C.S. Lewis, Mere Christianity.

Lewis invites couples to reflect on the nature of desire and fulfillment, suggesting that earthly desires may point to deeper spiritual realities and longings. He gives examples such as hunger pointing to food and thirst pointing to water, then suggests that if we find a desire nothing in this world can finally satisfy, we may have been made for another world.

That may seem like a strange quote to include in an article about marriage, but I think it belongs here. What you want in this earthly life reflects a desire for something eternal. His reflections on spiritual longings bring his theology into the realm of relationships. Your desires in a relationship reveal what you long for in transcendent fulfillment.

Marriage is beautiful, but it cannot bear the weight of being heaven. No spouse can satisfy every longing, heal every wound, answer every fear, or become the final source of meaning. A healthy marriage can be one of God’s great gifts, but it is still a gift. It is not God.

Lewis helps couples keep desire in its proper place. Your longing for love, joy, beauty, intimacy, and home is real. Marriage can reflect those things in powerful ways, but it also points beyond itself. When couples understand that, they can love each other more freely. They can receive marriage as a gift without demanding that their spouse become their savior.

5. “The promise… constrains them.”

“If people do not believe in permanent marriage, it is perhaps better that they should live together unmarried than that they should make vows they do not mean to keep. It is true that by living together without marriage they will be guilty (in Christian eyes) of fornication. But one fault is not mended by adding another; unchastity is not improved by adding perjury. The idea that 'being in love' is the only reason for remaining married really leaves no room for marriage as a contract or promise at all. If love is the whole thing, then the promise can add nothing; and if it adds nothing, then it should not be made.”- C.S. Lewis- Mere Christianity

In Mere Christianity, Lewis writes strongly about marriage vows. He argues that a person who makes a vow has entered the realm of promise, honesty, and justice. The exact language is sharper than many modern readers expect, but his concern is clear: vows should mean something. That is a good word for couples preparing for marriage.

Wedding vows are beautiful, but they are also serious. They are spoken before God, family, friends, witnesses, and one another. They are not decorative lines in a ceremony. They are the covenantal center of the wedding.

This does not mean marriage is sustained by grim obligation alone. Lewis knew the beauty of love and affection. But he also understood that a vow gives love shape. A promise gives love a structure strong enough to survive seasons when feelings are tired, circumstances are difficult, and life is heavier than expected.

Couples should enter marriage with joy, but also with honesty. If you make vows, mean them. If you mean them, learn how to keep them.

Further Up and Further In

C.S. Lewis's insights into marriage offer a timeless and profound perspective on love, commitment, and the human experience. His quotes, advice, and surprising insights guide couples as they navigate the joys and challenges of married life, inspiring them to cultivate deep connections, embrace vulnerability, and nurture enduring love.

In his final book, The Last Battle, Lewis coined the phrase “Further up and further in.” In the story, it becomes a picture of moving deeper into the reality and joy of God’s country. I have always loved that phrase. I think there is something in it for marriage too.

You will never fully know another person. Even after years of marriage, there is still more to learn, more to understand, more to forgive, more to enjoy, and more to discover. The pursuit does not end at the wedding. In many ways, the wedding marks the beginning of the deeper journey.

In C.S. Lewis’s mind, if you think it is good now, keep going; it only gets better.

Further up and further in.

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