What Is Love?

Quick Answer

Love is not a single, simple thing. Philosophical traditions distinguish between desire for beauty, friendship based on virtue, and care extended to others without demand for return. These are not synonyms for the same emotion. They involve different objects, different attitudes, and different ways of valuing another person.

The question "what is love?" therefore requires more precision than the question usually admits. What kind of relationship? What kind of response? Toward what kind of object? The answers given by Plato, Aristotle, Kierkegaard, and Buddhist traditions differ in significant ways, but they share a commitment to asking these more precise questions rather than settling for a single formula.

Definition of Love

In ordinary language, the word "love" covers desire, affection, devotion, attachment, care, and commitment. Ancient Greek philosophy offers a useful vocabulary for sorting these out: eros for erotic desire, philia for friendship, agape for self-giving love, and storge for familial affection. Each marks a different kind of relationship and a different kind of good.

This division is not merely academic. It matters because the difficulties associated with love are often the result of confusing one kind for another. A person may desire what friendship cannot give, or seek friendship where only care is appropriate. Philosophical clarity does not solve every problem, but it can prevent some misunderstandings before they become entrenched.

Why Humans Seek Love

Human beings are social creatures. Aristotle treats this as a biological and political fact: no one can live well in complete isolation, and the capacity for speech is a capacity for sharing judgments about justice and the good. Love, in its various forms, is one of the most important ways human beings connect their own good to the good of others.

Philosophical traditions offer different explanations for why love is sought. Plato treats it as a response to beauty that educates the soul. Aristotle treats it as a natural completion of social and political life. Kierkegaard treats it as a duty grounded in divine command. Buddhist traditions treat loving-kindness as a cultivated disposition that reduces suffering. These explanations do not cancel one another out, but they do suggest that the desire for love is not simple.

Plato and Forms of Love

Plato's Symposium offers one of the most famous philosophical accounts of love. Through a series of speeches culminating in Diotima's teaching, Plato presents love (eros) as a desire for the possession of the good forever. This desire drives human beings toward reproduction, creativity, and ultimately philosophy.

The ascent of love moves from attraction to a particular beautiful body, through appreciation of all beautiful bodies, to love of beautiful souls, to love of laws and institutions, and finally to contemplation of Beauty itself. This is the famous "ladder of love." Critics have asked whether the person who reaches the top rung is still loving anyone in particular, or whether the ascent abandons the individual for the abstract. The Phaedrus complicates this picture by restoring the particular beloved's role in the lover's transformation.

The Love archive develops these themes in greater depth, with attention to the political dimensions of Plato's thought in The Republic.

Aristotle and Friendship

Aristotle's treatment of love is concentrated in his account of friendship (philia) in Books VIII and IX of the Nicomachean Ethics. He distinguishes three kinds of friendship: those based on utility, those based on pleasure, and those based on virtue. The first two dissolve when the benefit or pleasure ceases. The third involves wishing the other person's good for their own sake, and it is the most stable and the most valuable.

Complete friendship is possible, Aristotle argues, only between people of good character who share enough of a life together to know each other well. This is a demanding standard, and he acknowledges that such friendships are rare. But he also insists that friendship is essential to the good life: no one would choose to live without friends, even if they had every other good.

Aristotle's account differs from Plato's in grounding love in shared activity and mutual recognition rather than in ascent to the universal. The Nicomachean Ethics and the archives on The Good Life and Happiness develop these connections further.

Kierkegaard and Existential Love

Kierkegaard's treatment of love spans several works. In Either/Or, the aesthetic life is presented as a pursuit of pleasure and variety that cannot sustain a commitment to another person. The ethical life, by contrast, involves marriage, fidelity, and the choice to take on responsibility for another person's well-being. In Works of Love, Kierkegaard develops a Christian account of love as duty and as a response to the divine command to love one's neighbor.

Kierkegaard's existential approach emphasizes that love is not primarily a feeling but a commitment. Feelings change; a commitment to love another person is sustained through choice and repetition. This is demanding, and Kierkegaard does not pretend that it is easy. But he argues that the alternative—a life of aesthetic detachment—is ultimately a form of despair.

Existentialism and Either/Or explore these themes in greater depth.

Buddhist Perspectives on Love and Compassion

Buddhist traditions do not use the word "love" in the same way as Greek philosophy. The more relevant concepts are metta (loving-kindness), karuna (compassion), and mudita (sympathetic joy). These are not private emotions but cultivated dispositions directed toward all beings without distinction.

Buddhist analysis distinguishes these attitudes from attachment and craving. Love that is entangled with possessiveness or desire for return is a form of clinging that can generate suffering. Love that is offered without attachment, grounded in the recognition of shared vulnerability, is a path toward freedom. This is not a rejection of particular relationships; it is a reorientation of the attitude one brings to them.

The Buddhism and Compassion archives provide more detailed accounts of these traditions.

Love and Happiness

Love and happiness are connected in complex ways. Aristotle argues that friendship is necessary for happiness, because human beings are social creatures who cannot flourish in isolation. But love can also be a source of pain, jealousy, and loss. The philosophical question is not whether love always makes people happy—it does not—but whether a life without love can be fully human.

Different traditions answer this question differently. Aristotle is relatively optimistic: the person who has developed virtue and found good friends has a strong claim to happiness. Kierkegaard is more cautious: love as duty does not promise happiness, but it promises something more important. Buddhist traditions are more radical still: the deepest happiness comes not from attachment but from the freedom that comes with non-attachment.

The Happiness archive explores these connections from multiple perspectives.

Love and The Good Life

Love is not a separate topic from the good life. It is woven into the question of what kind of life is worth living. Plato treats love as a path to philosophical understanding. Aristotle treats friendship as a necessary condition of flourishing. Kierkegaard treats love as a central ethical demand. Buddhist traditions treat loving-kindness as part of the path to liberation.

At the same time, love can be destructive. It can become possessive, obsessive, or self-deceptive. Philosophical traditions therefore ask not only whether love is a good but what kind of love, directed toward what objects, and guided by what understanding, genuinely contributes to a well-lived life. Purpose and Humaneness are archives that explore these connections from complementary angles.

Love and Human Connection

Love is one of the most important ways human beings connect with one another. But connection is not always love, and love is not always connection. A person can feel deeply connected to someone through shared trauma, mutual benefit, or common enmity without loving them. Conversely, a person can love someone they have never met, or someone who is no longer alive, without feeling the day-to-day sense of connection that the word usually implies.

Philosophical traditions help sort out these distinctions. Aristotle's account of friendship emphasizes shared activity and mutual recognition. Kierkegaard's account of neighbor-love emphasizes the ethical demand to care for every person. Buddhist accounts of loving-kindness emphasize the extension of care without distinction. Each tradition offers a different model of what it means to be connected to another person, and each has its own strengths and limitations.

Common Questions About Love

What is the difference between love and attachment? Greek philosophy distinguishes between love that seeks the good of the beloved and attachment that seeks one's own satisfaction. Buddhist traditions distinguish between loving-kindness and the clinging that generates suffering. Both traditions suggest that love can be examined and refined, not only felt.

Can love be rational? Philosophy has long debated whether love is a passion that resists reason or a judgment that can be evaluated. Plato treats love as a form of desire for the good. Aristotle treats friendship as a rational choice to share a life. Kierkegaard treats love as a commitment sustained by will. These accounts do not deny that love involves emotion; they deny that it is only emotion.

What is the relationship between love and virtue? Aristotle and other virtue ethicists treat love as an expression of character. A person who has developed the virtues will love differently from one who has not. Love can also be a school of virtue: caring for another person teaches patience, generosity, and the capacity to see beyond one's own interests.

Is love essential to a good life? Aristotle argues that friendship is necessary for flourishing. Other traditions are more cautious, but few deny that the capacity for love is a significant human good. The question is not whether love is the only good but whether a life entirely without it can be fully human.

Related Thinkers

Plato offers an account of love as ascent toward knowledge of Beauty itself. Aristotle grounds the best love in mutual virtue and shared activity. Kierkegaard emphasizes love as commitment sustained through choice rather than feeling. Each thinker contributes a distinctive perspective on the question of what love is and why it matters.

Sources

• Stanford Encyclopedia of Philosophy, Plato's Ethics and Politics in The Republic.
• Stanford Encyclopedia of Philosophy, Aristotle's Ethics.
• Stanford Encyclopedia of Philosophy, Kierkegaard.
• Stanford Encyclopedia of Philosophy, Buddhism.
• Stanford Encyclopedia of Philosophy, Existentialism.
• Aristotle, Nicomachean Ethics, trans. Terence Irwin (Hackett, 2019), Books VIII-IX.
• Søren Kierkegaard, Either/Or, trans. Alastair Hannay (Penguin, 1992).