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Emotions seem to straddle a boundary that philosophers have long found puzzling. On one side, emotions feel like bodily upheavals—a racing heart, a knot in the stomach, a flush of heat. On the other side, they appear to be about something: you are afraid of the dog, angry that you were insulted, joyful that your friend arrived. This dual character—part bodily sensation, part intentional state directed at the world—has driven the history of philosophical theorizing about emotion. The central question has always been which side is fundamental and how the two sides relate.
The earliest systematic framework in the Western tradition, the Stoic Theory of Emotions (c. 300–200 BCE), took a strongly rationalist line. The Stoics argued that emotions are essentially false judgments—specifically, judgments about what is good or bad that we make too quickly, before reason can correct them. An emotion like fear, on this view, is not a brute feeling but a mistaken evaluation that something bad is imminent. The Stoic prescription followed logically: if emotions are errors in judgment, then philosophical training can eliminate them, leading to the ideal of apatheia, or freedom from disturbing passions. This framework treated emotions as cognitive through and through, but as defective cognition.
Early modern philosophy inherited the Stoic emphasis on reason but split over whether emotions are allies or enemies of rational thought. Rationalism about Emotions (1600–1800), represented most clearly by Descartes and Spinoza, continued to treat emotions as mental states that involve ideas or judgments about the world. Descartes famously located the passions in the soul’s interaction with the body via the pineal gland, but he still held that passions are perceptions of what the body needs. Spinoza went further, arguing that an emotion is simply an idea of an increase or decrease in our power to act. For both, emotions are not blind forces; they have conceptual content that reason can engage with.
Running alongside Rationalism was Sentimentalism (1700–1800), a framework that reversed the priority. Thinkers such as David Hume and Adam Smith argued that moral and emotional responses are not products of reason but are original impressions or sentiments. Hume famously wrote that reason is and ought to be the slave of the passions. For Sentimentalism, emotions are the bedrock of moral motivation and aesthetic judgment; they are not errors to be corrected but the very source of value. This created a lasting disagreement: Rationalism saw emotions as cognitive states that can be evaluated for truth or falsity, while Sentimentalism saw them as non-cognitive responses that ground our evaluative life.
In the late nineteenth century, William James and Carl Lange independently proposed a radical alternative that became Feeling Theory (1884–1950). Their core idea was that an emotion just is the feeling of bodily changes. You do not tremble because you are afraid; rather, you are afraid because you tremble. The emotion is the perception of a physiological response—a racing heart, tense muscles, shallow breathing. This framework stripped emotions of their intentional, world-directed character. Fear, on this view, is not about a threat; it is a sensation of one’s own body in a certain state.
Feeling Theory was a direct challenge to the cognitive tradition stretching from the Stoics through Rationalism. If emotions are merely bodily feelings, then they have no propositional content and cannot be true or false. The framework was enormously influential in psychology and popular culture, but philosophers soon pressed a decisive objection: bodily feelings alone cannot distinguish between emotions that feel similar but have different objects. The feeling of a racing heart could be fear, excitement, or anxiety—what makes it one rather than another seems to depend on what the person takes the situation to be. That objection opened the door for a return to cognitivism.
By the mid-twentieth century, a cluster of frameworks revived the idea that emotions are essentially cognitive, but without the Stoic assumption that they are necessarily defective. Cognitivism about Emotions (1960–Present) is the broad thesis that emotions involve or are constituted by cognitive states such as beliefs, judgments, or appraisals. The most influential version is the Judgment Theory of Emotions (1960–Present), defended by Robert Solomon, Martha Nussbaum, and others. On this view, to feel an emotion is to make a judgment: anger is the judgment that one has been wronged; grief is the judgment that a significant loss has occurred; fear is the judgment that danger is present. Emotions are not mere feelings; they are evaluative judgments that can be assessed for appropriateness, rationality, and truth.
The Judgment Theory directly replaced the Feeling Theory by insisting that the bodily feeling is at most a side effect, not the core of the emotion. It also revived the Stoic insight that emotions have propositional content, but it dropped the Stoic hostility: emotions are not necessarily irrational; they can be perfectly reasonable responses to the world as we see it. This framework remains highly influential, especially in discussions of emotional rationality and moral psychology.
Almost as soon as Cognitivism gained traction, a rival camp pushed back. Non-Cognitivism about Emotions (1960–Present) denies that emotions are constituted by beliefs or judgments. Non-Cognitivists argue that emotions are more primitive than full-blown judgments—they are gut reactions, perceptions of salience, or action tendencies that can occur without any accompanying belief. For example, you might feel a startle of fear at a sudden noise even when you know perfectly well that the noise is harmless. If emotions were judgments, this conflict should not happen; you cannot simultaneously judge that there is no danger and judge that there is danger. Non-Cognitivists conclude that emotions are non-propositional states that can diverge from what we believe.
This debate between Cognitivism and Non-Cognitivism is one of the most persistent in the subfield. The two frameworks coexist in live disagreement. Cognitivists reply that the startle case is not a full emotion but a reflex, or that the emotion involves a judgment that is overridden by a stronger judgment. Non-Cognitivists counter that this stretches the concept of judgment beyond recognition. The disagreement is not merely terminological: it concerns whether emotions are the kind of thing that can be directly evaluated as rational or irrational, or whether they are more like perceptions that can be assessed only indirectly.
By the 1980s, philosophers began to ask whether the cognitive/non-cognitive debate had overlooked the social dimension of emotion. Social Constructionism about Emotions (1980–Present) argues that emotions are not universal, biologically fixed responses but are shaped by cultural norms, language, and social practices. What counts as grief, shame, or romantic love varies dramatically across cultures and historical periods. This framework challenged the universalist assumptions of both Cognitivism and Non-Cognitivism, which had tended to treat emotions as natural kinds. Social Constructionism does not deny that there are bodily feelings or cognitive appraisals, but it insists that the very categories we use to classify emotions are socially constructed. The framework coexists with cognitive theories by narrowing their scope: cognitive appraisals may be universal, but the specific emotional repertoire a person learns is culturally specific.
A different refinement came from the Perceptual Theory of Emotions (1990–Present), which tries to split the difference between Cognitivism and Non-Cognitivism. On this view, emotions are like perceptions: they present the world as having certain evaluative properties. Fear presents the world as dangerous; anger presents it as offensive. Like perceptions, emotions are not judgments—they can be mistaken, and they can persist in the face of contrary belief. But unlike mere bodily feelings, they have intentional content: they are about the world, not just about the body. The Perceptual Theory preserves the cognitive tradition’s emphasis on intentionality while accommodating the Non-Cognitivist insight that emotions are not under direct rational control. It has become one of the leading frameworks today because it offers a middle path that captures the phenomenology of emotional experience.
The most recent major framework, the Enactivist Theory of Emotion (2000–Present), draws on the broader Embodied Cognition movement in philosophy of mind. Enactivism rejects the idea that emotions are internal mental states that represent the world. Instead, emotions are patterns of embodied interaction with the environment. An emotion is not something happening inside you; it is a way of engaging with the world—a mode of being that involves your body, your actions, and your situation. Fear, on this view, is not a judgment or a feeling but a whole-body readiness to flee or freeze, enacted in a specific context.
The Enactivist Theory absorbs insights from both the Feeling Theory (the body matters) and the Perceptual Theory (emotions are world-directed), but it rejects the representationalism that both frameworks assume. Emotions do not represent danger; they are ways of coping with danger. This framework remains in active development and is often combined with Social Constructionism to argue that even the bodily patterns of emotion are shaped by cultural practices.
Today, no single framework commands universal assent. The leading frameworks—Cognitivism (especially the Judgment Theory), the Perceptual Theory, and the Enactivist Theory—agree on one thing: emotions are intentional states directed at the world, not mere bodily feelings. They disagree sharply on the nature of that intentionality. Cognitivists hold that it is propositional and judgment-like; Perceptual theorists hold that it is non-conceptual and perception-like; Enactivists hold that it is embodied and action-oriented. Social Constructionism adds a further layer of disagreement by questioning whether any of these frameworks can capture the cultural variability of emotional life. Non-Cognitivism remains a live alternative, especially in empirical psychology, where it informs work on automatic appraisals and affective priming.
The division of labor among these frameworks is pragmatic as well as theoretical. Judgment Theory is strongest when philosophers want to evaluate the rationality of emotions. The Perceptual Theory is preferred when the focus is on emotional phenomenology and the way emotions inform perception. Enactivism is gaining ground in interdisciplinary work that connects philosophy to cognitive science and neuroscience. Social Constructionism is indispensable for cross-cultural and historical studies. The philosophy of emotion today is a pluralistic field, held together by a shared conviction that emotions are central to understanding mind, value, and human agency.