Martha Nussbaum: Philosophy, Quotes & Legacy

Biography

Martha Nussbaum was born on May 6, 1947, in New York City, the daughter of a lawyer and a homemaker who expected her, as she later recalled, to pursue a conventional life of domestic respectability. She studied theatre and classics at Wellesley College before transferring to New York University, where she completed her undergraduate degree in 1969. Her doctoral work took her to Harvard, where she earned her PhD in classics in 1975 with a dissertation on Aristotle's De Motu Animalium. The choice of classics was not accidental. Nussbaum believed that ancient Greek and Roman philosophy held resources for thinking about human flourishing, vulnerability, and the emotions that modern philosophy had largely neglected, and this conviction has animated her entire career.

After completing her doctorate, Nussbaum taught at Harvard, Brown, and eventually the University of Chicago, where she became the Ernst Freund Distinguished Service Professor of Law and Ethics, appointed jointly in the Law School, the Philosophy Department, and the Divinity School. This unusual institutional position reflects the breadth of her work, which moves freely across disciplinary boundaries that most scholars treat as fixed. She has held visiting positions at Oxford, Cambridge, and the University of Oslo, and has received more than sixty honorary degrees from universities around the world.

Nussbaum's intellectual development was shaped by several formative encounters. Her early work on Greek tragedy and Aristotle established her as a classicist of unusual philosophical ambition. In the 1980s, she turned increasingly toward political philosophy and economics, collaborating with the economist and philosopher Amartya Sen on what became the capabilities approach. Her time in India, where she served as a visiting professor and engaged with development economists and social activists, deepened her conviction that philosophy must address the concrete conditions of human deprivation. She has also been a prominent public intellectual, writing for The New York Review of Books, The New Republic, and other venues, and has argued forcefully for the role of the humanities in democratic life.

Philosophy

Nussbaum's philosophy resists easy categorization because it draws on traditions that are usually kept apart. From Aristotle she takes the conviction that political philosophy must begin with a rich account of human flourishing, not an abstract theory of the right or the good. From the Stoics she inherits the idea that emotions are not irrational forces but judgments, cognitive appraisals that ascribe value to objects and persons in the world. From Kant she takes the insistence on the equal dignity of every person, a dignity that cannot be traded away for aggregate welfare. And from John Rawls she borrows the method of constructing political principles that can be the object of an overlapping consensus among people who hold different comprehensive doctrines.

The result is a philosophical program that is simultaneously Aristotelian in its attention to what human beings can do and be, Kantian in its commitment to equal respect, and liberal in its insistence that the state must remain neutral among competing visions of the good life. Nussbaum calls this a "thin but not too thin" political conception. It is thick enough to specify a set of entitlements that every person is owed, but thin enough to leave individuals and communities free to choose how to live. This balance between substantive commitments and pluralist toleration is the architectural principle of her entire body of work.

A distinctive feature of Nussbaum's method is her reliance on literature. She has argued, most extensively in Love's Knowledge (1990), that novels are not merely illustrations of philosophical ideas but are themselves a form of moral philosophy. Henry James's attention to the texture of moral perception, Marcel Proust's analysis of jealousy and love, and Charles Dickens's depiction of social suffering all reveal dimensions of moral life that systematic ethical theory tends to miss. Literature trains the moral imagination, the capacity to see the world from another person's standpoint, and this capacity is, for Nussbaum, essential to both personal ethics and democratic citizenship.

Major Works

Nussbaum's bibliography is unusually large, and several works mark decisive turns in her thought. The Fragility of Goodness (1986) established her reputation as a philosopher of the ancient world. Drawing on Greek tragedy and Platonic and Aristotelian ethics, it argued that human flourishing is structurally vulnerable to luck, and that the best ethical theories acknowledge rather than deny this vulnerability. The book challenged the prevailing assumption, inherited from Kant and the utilitarians, that a good life is one that is self-sufficient and immune to the contingencies of fortune.

The Therapy of Desire (1994) extended her engagement with ancient philosophy to the Hellenistic schools, the Epicureans, Stoics, and Skeptics, treating them not as historical curiosities but as living therapeutic traditions that offer tools for diagnosing and treating the disorders of the soul. Cultivating Humanity (1997) applied her Aristotelian and cosmopolitan commitments to the debate over liberal education, arguing that the humanities are indispensable to democratic citizenship and defending multicultural curricula against their conservative critics.

Sex and Social Justice (1999) collected her essays on feminism and international development, including the influential papers in which she first articulated the capabilities approach as a framework for assessing women's quality of life in developing countries. Upheavals of Thought (2001), a massive study of the emotions, developed her neo-Stoic cognitive theory of emotion in dialogue with psychology, anthropology, and literature, arguing that emotions are intelligent responses to objects perceived as salient to the person's flourishing.

Frontiers of Justice (2006) brought the capabilities approach to bear on problems that Rawls's theory of justice had struggled to address: justice for people with disabilities, justice across national borders, and justice for nonhuman animals. Creating Capabilities (2011) offered the most accessible and systematic statement of the approach. Anger and Forgiveness (2016) examined the moral psychology of transitional justice, arguing against the idea that anger is a necessary instrument of justice and for a form of transitional justice rooted in generosity rather than retribution. The Monarchy of Fear (2018) turned to the political emotions of the Trump era, diagnosing fear as the dominant affect of contemporary American politics and arguing for a politics of hope.

Key Ideas

The Capabilities Approach

The capabilities approach is Nussbaum's most influential contribution to philosophy. Developed in dialogue with Amartya Sen, though diverging from Sen's version in important respects, it asks a fundamentally different question from the one posed by utilitarian or resource-based theories of justice. Instead of asking how satisfied people are, or how many resources they command, it asks what people are actually able to do and to be. A person who has enough food but is prevented by social norms from leaving the house is not fully flourishing, even if they report high life satisfaction and command adequate resources. The approach shifts the focus from subjective states and material inputs to real freedoms, the substantive opportunities a person has to live a life they have reason to value.

Nussbaum distinguishes between combined capabilities, the internal capacities of the person together with the external social, economic, and political conditions that make it possible to exercise them, and internal capabilities, the developed states of the person themselves. Justice requires not merely that people have the internal capacity for, say, political participation, but that the social environment makes it possible for them to exercise that capacity. This is why the approach is a theory of justice rather than merely a theory of well-being: it identifies what societies owe their members, not just what individuals owe themselves.

The Ten Central Capabilities

Unlike Sen, who has deliberately left the list of relevant capabilities open to democratic deliberation, Nussbaum has proposed a specific list of ten central capabilities that she argues should be guaranteed to every person as a matter of constitutional right. These are: life, of a normal length; bodily health, including adequate nourishment and shelter; bodily integrity, including freedom of movement and security against violence; senses, imagination, and thought, including education and freedom of expression; emotions, including the capacity for attachment to people and things outside oneself; practical reason, the capacity to form a conception of the good and to plan one's life accordingly; affiliation, including the capacity for friendship and the social bases of self-respect and non-humiliation; other species, the capacity to live with concern for and in relation to animals and nature; play; and control over one's environment, including political participation and material security through property rights and employment.

Nussbaum insists that these capabilities are not a ladder in which higher rungs matter more than lower ones, but a threshold. Every person is entitled to a minimum level of each capability, and a society that falls below the threshold on any one of them is unjust. This threshold is not utopian. It is meant to guide constitutional design and public policy, and Nussbaum has worked with governments and international organizations, including the United Nations Development Programme, to translate it into concrete indicators of human development.

Emotions as Cognitive Appraisals

Nussbaum's theory of emotions extends and revises the Stoic view that emotions are judgments. On her account, an emotion is not a raw feeling but an intelligent response to an object perceived as salient to the person's flourishing. Fear is the judgment that a serious threat looms; grief is the judgment that something of great value has been lost; anger is the judgment that one has been wrongfully damaged by another. This does not mean that emotions are always rational or well-founded. A person can be wrong about what threatens them or about what they have lost. But it does mean that emotions are not mere physiological disturbances. They are forms of evaluative cognition, and they can be assessed for their accuracy and appropriateness.

This theory has far-reaching implications. If emotions are judgments, then they can be educated. Moral education is not a matter of suppressing emotion in favor of reason but of cultivating appropriate emotional responses, teaching people to fear what is genuinely dangerous, to grieve what is genuinely lost, to be angry at genuine injustice. Nussbaum develops this argument in Upheavals of Thought and extends it in Anger and Forgiveness, where she argues that anger, though sometimes understandable, is normatively problematic as a guide to justice because it involves a desire for payback that is incompatible with the kind of generous and forward-looking politics she advocates.

Cosmopolitanism and Global Justice

Nussbaum is a leading voice for cosmopolitanism, the view that our moral obligations extend to all human beings regardless of nationality, ethnicity, or religion. She has argued that the nation-state is not the appropriate unit of moral concern and that principles of justice should be applied globally. In Frontiers of Justice, she uses the capabilities approach to argue that wealthy nations have obligations to ensure that people in poor countries achieve the threshold level of central capabilities. This position puts her at odds with political liberals like Rawls, who restricted his theory of justice to domestic society, and with communitarians who argue that obligations of justice arise only within bounded political communities.

Famous Quotes

Nussbaum's writing is marked by a style that is both analytically precise and rhetorically powerful, and several formulations have become touchstones in contemporary philosophy. Her most cited formulation of the capabilities approach's guiding question asks: "What is each person able to do and to be?" This deceptively simple question encapsulates the approach's departure from both utilitarianism, which asks about satisfaction, and resourcism, which asks about material holdings. The question redirects attention from inputs and subjective states to the actual substantive freedoms that make a life human and dignified.

She has written that "the capabilities approach is a partial theory of justice, not a theory of the good," emphasizing that it specifies what people are owed without dictating how they should live. On emotions, she has observed that "emotions are not just the fuel that powers the psychological mechanism of a reasoning creature, they are parts, highly complex and messy parts, of this creature's reasoning itself." On the role of literature in philosophy, she has argued that "certain truths about human life can only be grasped with the kind of attention that a literary text demands and rewards."

On education, she has insisted that "the world's traditions of reflective argument and imagination are a heritage belonging to all human beings," and that "the humanities are not a luxury but a necessity for democratic citizenship." On global justice, she has written that "national sovereignty has only a instrumental, not an intrinsic, value," and that "our obligations to distant strangers are not weaker but different in kind from our obligations to fellow citizens."

Legacy

Nussbaum's influence extends well beyond academic philosophy. The capabilities approach has become one of the dominant frameworks in international development policy, informing the United Nations' Human Development Index and the work of development agencies around the world. By shifting the measure of development from GDP per capita to substantive freedoms, the approach has reframed how policymakers think about poverty, inequality, and human well-being. Economists, political scientists, and development practitioners who would never read a treatise on ancient Greek ethics routinely employ the vocabulary of capabilities, thresholds, and functioning that Nussbaum helped to establish.

Within philosophy, Nussbaum has reshaped several fields. In ancient philosophy, she brought Greek tragedy and Hellenistic ethics into conversation with contemporary moral theory, demonstrating that the ancients are not merely historical figures but living interlocutors. In political philosophy, the capabilities approach has joined Rawlsian liberalism and utilitarianism as one of the three principal theories of justice discussed in the literature. In feminist philosophy, her work on objectification, on the social construction of women's capabilities, and on the role of emotions in public life has been widely influential. In the philosophy of emotions, her neo-Stoic cognitive theory remains one of the most developed and debated positions.

Her advocacy for the humanities has made her a prominent voice in debates about the purpose of higher education. In Not for Profit (2010), she argued that the global trend toward treating education as an instrument of economic growth threatens the capacities for critical thinking, empathy, and democratic citizenship that societies need to survive. This argument has resonated with educators and policymakers concerned about the defunding of humanities programs and the narrowing of educational purpose.

Nussbaum's legacy is also that of a model for what philosophy can be. She has refused the academic tendency to specialize, writing with equal authority about Aristotle, Indian constitutional law, the novels of Henry James, the psychology of disgust, and the politics of religious toleration. Her work demonstrates that philosophy is not a self-enclosed discipline but an engaged practice of thinking about what human beings need to live lives worthy of their dignity. In an era when philosophy is often accused of irrelevance, Nussbaum has shown that it can speak to the most urgent questions of justice, development, and human flourishing.

Her thought connects directly to the broader traditions she draws on and contributes to. The virtue ethics tradition that runs from Aristotle through the present day finds in Nussbaum one of its most sophisticated contemporary exponents. The feminist philosophy tradition benefits from her analysis of how social and political structures shape, and often constrain, the capabilities of women and other marginalized groups. For readers seeking to understand what it means to live a good life and to find purpose in a world of vulnerability and inequality, Nussbaum's philosophy offers both a diagnosis and a vision, an account of what we owe one another and what it takes for each person to flourish.