Aristotle’s psychology (384-322 BCE) represents the most comprehensive and systematic psychological theory of classical antiquity, establishing foundational frameworks for understanding human consciousness, learning, emotion, and behavior that would dominate Western psychological thought for nearly two millennia. Through his masterwork De Anima (On the Soul) and related treatises in ethics, biology, and natural philosophy, Aristotle created integrated theoretical systems addressing virtually every major domain of psychological inquiry including sensation and perception, memory and learning, emotion and motivation, cognitive development, personality formation, and moral psychology. Central to Aristotelian psychology is the hylomorphic theory of the soul as the form or actualization of a living body, proposing that psychological phenomena emerge from but are not reducible to underlying biological processes. This unified approach to mind-body relationships established crucial foundations for later developments in physiological psychology and contemporary neuroscience. Aristotle’s sophisticated analyses of sensory integration through the common sense (sensus communis), associative learning principles, and the hierarchical organization of psychological functions from vegetative through sensitive to rational levels created conceptual frameworks that continue to inform contemporary cognitive psychology, developmental psychology, and comparative psychology. His ethical psychology and character development theory established systematic approaches to understanding personality formation, moral reasoning, and human flourishing (eudaimonia) that remain influential in positive psychology and moral development research. The empirical methodology demonstrated throughout Aristotelian psychology, emphasizing systematic observation, biological grounding, and integration of theoretical analysis with practical application, established intellectual frameworks that enabled the eventual development of scientific psychology while maintaining focus on human welfare and ethical development within the broader history of psychology.
Introduction
Aristotle’s psychological theories represent the culmination of classical Greek thought about human mental life, synthesizing earlier philosophical insights with systematic biological investigation to create comprehensive frameworks for understanding consciousness, behavior, and psychological development that would influence intellectual development for over two millennia. Writing during the 4th century BCE as both student of Plato and tutor to Alexander the Great, Aristotle developed psychological theories that demonstrated unprecedented theoretical sophistication while maintaining practical focus on understanding human nature and promoting individual and social flourishing.
The revolutionary character of Aristotelian psychology emerges through its systematic integration of philosophical analysis with empirical observation, creating approaches to psychological inquiry that anticipated many features of modern scientific psychology. Unlike earlier philosophical traditions that emphasized abstract speculation or mathematical reasoning, Aristotelian psychology grounded theoretical analysis in careful observation of biological processes, behavioral patterns, and individual differences across species and developmental stages.
The contemporary relevance of Aristotelian psychology extends far beyond historical interest to encompass fundamental principles that continue to guide modern psychological research and theory development. Issues including the mind-body relationship, hierarchical organization of psychological functions, associative learning processes, emotional regulation, moral development, and individual differences all received sophisticated treatment in Aristotelian theory that anticipates many later psychological discoveries and continues to inform contemporary theoretical development.
The methodological approach demonstrated throughout Aristotelian psychology—combining systematic observation with logical analysis, integrating biological and psychological levels of explanation, and maintaining focus on practical applications for human welfare—established intellectual frameworks that remain central to contemporary psychological science. Aristotle’s emphasis on understanding psychological phenomena within their broader biological and social contexts also anticipated later developments in ecological psychology and biopsychosocial approaches to mental health and human development.
The Soul as Form: Hylomorphic Psychology and Mind-Body Unity
Central to Aristotelian psychology is the hylomorphic theory of the soul, which proposes that the soul (psyche) constitutes the form or actualization of a living body, creating a unified substance in which psychological and physical aspects represent different levels of description rather than separate entities. This revolutionary approach to mind-body relationships resolved many philosophical problems inherited from earlier dualistic theories while establishing theoretical frameworks that continue to influence contemporary philosophy of mind and cognitive neuroscience.
According to Aristotelian theory, the soul and body constitute a unified substance comparable to the relationship between shape and wax, with the soul representing the organizational principle that gives life and specific capabilities to bodily matter. This hylomorphic unity means that psychological phenomena emerge from biological processes while possessing emergent properties that cannot be reduced to purely physical descriptions. Mental states and processes require bodily substrate but involve organizational principles that transcend simple material explanation.
The Aristotelian analysis of psychological emergence demonstrates sophisticated understanding of levels of organization and their relationships, recognizing that higher-level properties depend on but are not identical to lower-level processes. This emergentist approach to psychology established crucial foundations for later developments in systems theory and contemporary neuroscience by recognizing that consciousness and mental activity involve complex organizational properties of nervous systems rather than simple material processes.
Aristotelian psychology distinguishes three levels of soul corresponding to different degrees of biological organization: the nutritive soul responsible for growth and reproduction, the sensitive soul responsible for sensation and movement, and the rational soul responsible for thinking and reasoning. Humans possess all three levels in hierarchical integration, with higher levels incorporating and building upon lower levels. This hierarchical model anticipated later developments in evolutionary psychology and developmental neuroscience by recognizing that human psychological capabilities build upon more basic biological functions shared with other living organisms.
The nutritive soul governs basic life processes including metabolism, growth, and reproduction that are shared with plants and represent the most fundamental level of psychological organization. While these functions might not appear psychological in the modern sense, Aristotelian theory recognized that they involve goal-directed activities and self-regulation that establish foundations for more complex psychological processes.
The sensitive soul governs sensation, perception, movement, and basic forms of learning and memory that are shared with other animals and represent the distinctively animal level of psychological organization. According to Aristotelian theory, the capacity for sensation defines the boundary between animal and plant life, while the specific sensory and cognitive capabilities of different species reflect their adaptive needs and environmental challenges.
The rational soul governs abstract thinking, deliberative reasoning, and moral judgment that are unique to human beings and represent the highest level of psychological organization. Rational capabilities enable humans to transcend immediate sensory experience through abstract thought, moral reasoning, and contemplation of universal principles that constitute the distinctive features of human psychological life.
Sensation and Perception: The Architecture of Conscious Experience
Aristotelian sensory psychology provides sophisticated analysis of perceptual processes that established foundational concepts for understanding how conscious experience emerges from sensory information and continues to inform contemporary cognitive psychology and neuroscience. Through systematic investigation of the five external senses and their integration in unified perceptual experience, Aristotelian theory developed comprehensive frameworks for understanding the relationship between sensation and consciousness.
According to Aristotelian theory, sensation involves the reception of sensible forms without matter, suggesting that perceptual experience involves informational rather than material processes. When the eye perceives color or the ear perceives sound, sensory organs receive structural information that preserves the organization of external objects without incorporating their material substance. This informational approach to perception anticipated later developments in cognitive psychology emphasizing the computational aspects of perceptual processing.
The Aristotelian analysis of individual sensory modalities demonstrates remarkable sophistication in understanding the specific capabilities and limitations of different perceptual systems. Vision involves the reception of color and form through transparent media, hearing involves the reception of sound through air vibrations, smell and taste involve chemical reception of material effluences, and touch involves direct contact with tactile qualities. Each sensory modality possesses characteristic objects and operates according to specific mechanisms that determine its contributions to overall perceptual experience.
Central to Aristotelian perceptual theory is the concept of the common sense (sensus communis), an integrative faculty responsible for combining information from different sensory modalities into unified perceptual experiences. The common sense enables individuals to recognize that the same object can be simultaneously seen, heard, and touched, and it provides the basis for recognizing complex objects that involve multiple sensory qualities. This integrative function addresses fundamental questions about the unity of consciousness and cross-modal perception that remain central to contemporary cognitive psychology.
The common sense also governs perception of common sensibles including movement, rest, shape, size, number, and unity that can be perceived through multiple sensory modalities. These cross-modal qualities require integrative processing that goes beyond the capabilities of individual sensory organs and demonstrates the active role of psychological processes in organizing perceptual experience.
Aristotelian theory recognizes several internal senses beyond the common sense, including imagination (phantasia), memory (mneme), and dreams that enable psychological processing of sensory information across time and situations. These internal senses provide the basis for learning, thinking, and planning by preserving and manipulating sensory information in the absence of immediate stimulation.
The imagination serves as a crucial intermediary between sensation and thinking, enabling the formation and manipulation of mental images that represent absent objects and situations. According to Aristotelian theory, imagination is required for both memory and rational thought, since thinking involves the manipulation of sensory-derived images rather than direct contact with abstract objects.
Learning and Memory: Associative Principles and Cognitive Development
Aristotelian learning theory established the first systematic analysis of associative processes that would influence psychological thought throughout its historical development and continue to inform contemporary research on learning, memory, and cognitive development. Through careful analysis of how experience shapes knowledge and behavior, Aristotelian psychology developed comprehensive frameworks for understanding the mechanisms and principles underlying psychological change and development.
The Aristotelian theory of learning emphasizes the crucial role of repetition and association in establishing reliable patterns of psychological response. According to this theory, sensory experiences create movements within the soul that subside over time but can be reactivated through similar experiences or appropriate cues. Through repeated exposure, certain psychological movements become reliably associated with specific stimuli or situations, creating the basis for learning and memory.
Aristotelian association theory distinguishes three primary principles of associative connection: similarity, contrast, and contiguity. Similar experiences tend to evoke one another because they involve comparable psychological movements, contrasting experiences become connected through their opposition and mutual definition, and contiguous experiences become associated through their temporal or spatial proximity. These associative principles established foundational concepts for learning theory that would influence psychological research for over two millennia.
The principle of contiguity receives particular emphasis in Aristotelian learning theory, with temporal contiguity providing the primary mechanism for establishing associative connections between experiences. Events that occur together in time tend to become psychologically connected so that experiencing one tends to evoke memory or expectation of the other. This temporal association provides the basis for both learning and memory retrieval.
Aristotelian memory theory distinguishes between memory proper (mneme) and recollection (anamnesis), with memory involving the retention and recognition of past experiences while recollection involves the active search for and reconstruction of specific memories. Memory represents a relatively passive capacity for retaining impressions, while recollection involves deliberate cognitive processes including the use of associative connections to locate and retrieve specific information.
The process of recollection involves systematic search through associative networks, beginning with available cues and following associative connections until the target memory is located. This reconstructive approach to memory emphasized the active role of cognitive processes in memory retrieval and anticipated later developments in cognitive psychology emphasizing the constructive nature of remembering.
Aristotelian learning theory recognizes important individual differences in learning capacity and memory function related to age, health, and constitutional factors. Children and elderly individuals often show memory difficulties due to excessive moisture in the brain that interferes with the formation and retention of clear impressions, while individuals in optimal health during middle age typically demonstrate the most effective learning and memory capabilities.
The Aristotelian analysis of habit (hexis) provides sophisticated understanding of how repeated practice creates lasting changes in psychological organization that determine character and behavioral tendencies. Through repeated performance of specific actions, individuals develop stable dispositions that make similar actions easier and more likely in the future. This habit formation provides the basis for character development and skill acquisition.
Emotion and Motivation: The Psychology of Action and Feeling
Aristotelian emotion theory provides systematic analysis of affective processes that established foundational concepts for understanding the relationship between cognition and emotion, the social functions of emotional experience, and the role of emotions in moral development and decision-making. Through detailed analysis of specific emotions and their cognitive components, Aristotelian psychology developed comprehensive frameworks for emotional understanding that continue to influence contemporary emotion research.
According to Aristotelian theory, emotions involve complex combinations of cognitive evaluation, physiological arousal, and behavioral tendency that arise in response to specific types of situations and serve important functions in adaptive behavior and social interaction. Rather than viewing emotions simply as irrational disturbances, Aristotelian analysis recognizes emotions as intelligent responses that involve sophisticated cognitive appraisal and serve crucial functions in human life.
The Aristotelian analysis of anger (orge) demonstrates sophisticated understanding of emotional processes as involving cognitive evaluation of situations, physiological arousal, and motivational tendencies toward specific actions. Anger arises from the perception that one has been wrongfully injured or insulted by another person who had the power to act otherwise, involves physiological arousal and pain, and motivates revenge or retaliation to restore honor and prevent future injury.
This cognitive-motivational approach to anger reveals several important principles of Aristotelian emotion theory. Emotions involve beliefs about specific types of situations rather than simple physiological responses, they serve functional purposes related to individual welfare and social relationships, and they can be evaluated for appropriateness based on the accuracy of underlying cognitive evaluations and the reasonableness of motivated responses.
The Aristotelian analysis of fear (phobos) provides similar cognitive-motivational analysis, with fear arising from the perception of impending danger or evil, involving physiological disturbance and mental distress, and motivating avoidance or protective behavior. Different types of fear reflect different categories of perceived threats and appropriate protective responses, with courage representing the appropriate middle ground between cowardly excess and rash deficiency of fear.
Aristotelian emotion theory emphasizes the social dimensions of emotional experience, recognizing that many emotions involve relationships with other people and serve important functions in social cooperation and conflict. Emotions like shame, pride, envy, and pity arise from social comparisons and evaluations, involve complex understanding of social relationships and moral standards, and influence behavior in ways that affect social harmony and individual reputation.
The integration of emotion with moral psychology represents one of the most sophisticated aspects of Aristotelian theory. According to Aristotelian analysis, moral virtues involve the appropriate regulation of emotions through rational understanding and habitual practice. Courage involves appropriate fear responses, generosity involves appropriate attitudes toward wealth and sharing, and justice involves appropriate emotional responses to fairness and unfairness.
Aristotelian motivation theory recognizes multiple sources of behavioral motivation including appetitive desires for pleasure and avoidance of pain, spirited desires for honor and recognition, and rational desires for knowledge and virtue. These different motivational systems can either conflict or cooperate depending on individual development and circumstances, with psychological maturity involving the integration of different motivational systems under rational guidance.
Cognitive Psychology: Thinking, Reasoning, and Intellectual Development
Aristotelian cognitive psychology provides systematic analysis of thinking processes that established foundational concepts for understanding reasoning, problem-solving, and intellectual development that continue to inform contemporary cognitive psychology and philosophy of mind. Through careful analysis of different forms of thinking and their relationships to sensation, memory, and practical action, Aristotelian psychology developed comprehensive frameworks for understanding human intellectual capabilities.
According to Aristotelian theory, thinking involves the manipulation of images derived from sensory experience, with abstract thought requiring the ability to focus on universal aspects of particular experiences while ignoring their specific material characteristics. This image-based approach to thinking emphasized the continuity between sensory and intellectual processes while recognizing the distinctive capabilities involved in abstract reasoning.
The Aristotelian distinction between theoretical and practical thinking provides important analysis of different cognitive functions and their relationships to different types of knowledge and action. Theoretical thinking aims at understanding universal truths and principles for their own sake, while practical thinking aims at determining appropriate actions in specific situations. Both forms of thinking involve rational processes but serve different functions and operate according to different standards of success.
Theoretical thinking involves the apprehension of universal principles through processes of abstraction and generalization from particular experiences. Through repeated exposure to similar objects and situations, individuals gradually recognize common patterns and relationships that constitute universal knowledge. This abstractive process enables humans to transcend immediate sensory experience and achieve understanding of mathematical, scientific, and philosophical principles.
Practical thinking involves deliberation (bouleusis) about appropriate actions in specific situations, taking into account individual goals, available means, probable consequences, and moral considerations. Practical reasoning requires the ability to integrate general principles with particular circumstances and to choose actions that promote individual and social flourishing.
The Aristotelian analysis of deliberation provides sophisticated understanding of decision-making processes that anticipates later developments in cognitive psychology and decision science. Deliberation involves systematic consideration of alternative actions, evaluation of their likely consequences, assessment of their moral appropriateness, and selection of actions that best serve rational goals. This process requires integration of factual knowledge, value commitments, and practical wisdom.
Aristotelian epistemology distinguishes between different forms of knowledge including perception of particulars, scientific knowledge of universals, and practical wisdom about action. Each form of knowledge involves different cognitive processes and serves different functions, with complete human development requiring competence in all three domains.
The concept of nous (intuitive reason) represents the highest form of intellectual activity, involving direct apprehension of first principles that cannot be demonstrated through syllogistic reasoning but provide the foundations for all other knowledge. This intuitive capacity enables humans to recognize fundamental logical, mathematical, and ethical principles that constitute the basis for systematic knowledge and rational action.
Moral Psychology and Character Development
Aristotelian moral psychology provides comprehensive analysis of character formation, moral reasoning, and ethical development that established foundational frameworks for understanding the relationship between individual psychology and moral virtue that continue to influence contemporary moral psychology and character education research. Through systematic integration of cognitive, emotional, and behavioral aspects of moral functioning, Aristotelian theory created sophisticated approaches to understanding how individuals develop ethical capabilities and achieve moral excellence.
Central to Aristotelian moral psychology is the concept of virtue (arete) as excellence of character involving the habitual choice of appropriate actions and emotions in specific types of situations. According to Aristotelian theory, virtues represent stable dispositions that enable individuals to respond appropriately to moral challenges and promote both individual flourishing and social harmony. Virtues are acquired through practice and habituation rather than simple intellectual understanding, requiring integration of cognitive, emotional, and behavioral components.
The Aristotelian doctrine of the mean provides systematic analysis of moral virtues as involving appropriate balance between extremes of excess and deficiency. Courage represents the mean between cowardly deficiency and rash excess of confidence in dangerous situations, generosity represents the mean between stingy deficiency and wasteful excess in sharing resources, and honesty represents the mean between self-deprecating deficiency and boastful excess in self-presentation.
This doctrine of the mean demonstrates sophisticated understanding of moral psychology as involving context-sensitive judgment rather than rigid rule-following. Appropriate moral responses depend on careful assessment of particular situations including the people involved, the specific circumstances, the cultural context, and the likely consequences of different actions. Moral wisdom involves the ability to recognize relevant situational factors and choose responses that promote human flourishing.
Aristotelian character development theory emphasizes the crucial role of early experience, education, and social environment in moral formation. Children develop moral capabilities through observation of adult models, practice of virtuous actions, and gradual internalization of moral standards. This developmental process requires supportive social environments that provide appropriate moral guidance and opportunities for practicing virtuous behavior.
The concept of phronesis (practical wisdom) represents the intellectual virtue that enables individuals to deliberate well about human affairs and make appropriate moral decisions in complex situations. Practical wisdom involves the ability to integrate general moral principles with particular circumstances, to anticipate the consequences of different actions, and to choose actions that promote individual and social flourishing.
Practical wisdom develops through experience and reflection, requiring both intellectual understanding of moral principles and practical experience in applying these principles to specific situations. Young people typically lack practical wisdom not because they lack intelligence but because they lack sufficient experience in dealing with complex moral situations and their consequences.
The Aristotelian analysis of moral emotions demonstrates sophisticated understanding of the role of affective processes in moral psychology. Moral emotions like shame, guilt, pride, and indignation involve cognitive evaluations of moral situations and motivate behavior that supports moral standards. Appropriate moral development involves learning to experience appropriate emotions in moral situations and to use emotional responses as guides to moral action.
The integration of individual and social dimensions of moral psychology represents another sophisticated aspect of Aristotelian theory. According to Aristotelian analysis, individual moral development requires supportive social relationships and community institutions, while healthy communities depend on citizens who possess moral virtues and practical wisdom. This reciprocal relationship between individual character and social institutions emphasizes the social nature of human moral development.
Comparative Psychology and Human Nature
Aristotelian comparative psychology provides systematic analysis of psychological similarities and differences across species that established foundational frameworks for understanding human nature in relation to other animals and continues to inform contemporary research in evolutionary psychology and comparative cognition. Through careful observation of animal behavior and systematic comparison with human psychological capabilities, Aristotelian psychology developed sophisticated understanding of the continuities and discontinuities between human and animal psychology.
According to Aristotelian theory, the capacity for sensation defines the boundary between animal and plant life, with all animals possessing sensory capabilities and basic forms of learning and memory while only humans possess rational capabilities for abstract thought and moral reasoning. This hierarchical approach to psychological organization recognizes both the evolutionary continuity between humans and other animals and the distinctive features that characterize human psychological life.
Aristotelian analysis of animal psychology demonstrates remarkable sophistication in recognizing complex cognitive, emotional, and social capabilities in non-human animals. Many animals display forms of intelligence, social cooperation, emotional expression, and even apparent virtue that suggest psychological continuity with human capabilities while lacking the rational capacities for abstract thought and moral deliberation that distinguish human psychology.
The Aristotelian concept of natural slavery provides controversial analysis of individual differences in rational capacity that has been criticized for its potential support of social inequality. According to this theory, some individuals possess limited rational capabilities and benefit from guidance by those with superior intellectual and moral development. While this aspect of Aristotelian psychology reflects problematic assumptions about human equality, it also demonstrates recognition of significant individual differences in cognitive and moral capabilities.
Aristotelian biological psychology emphasizes the relationship between psychological capabilities and biological organization, recognizing that different psychological functions depend on specific anatomical structures and physiological processes. The brain serves as the organ of sensation and movement while the heart serves as the center of vital functions and emotional experience. This biological approach to psychology established important precedents for later developments in physiological psychology and neuroscience.
The teleological character of Aristotelian psychology provides systematic analysis of psychological functions in terms of their adaptive purposes and contributions to survival and flourishing. Different psychological capabilities serve specific functions in enabling organisms to meet environmental challenges and fulfill their natural potentials. This functional approach to psychology anticipated later developments in evolutionary psychology and ethology.
Conclusion
Aristotle’s psychology represents the most comprehensive and systematic psychological theory of classical antiquity, establishing theoretical and methodological frameworks that would dominate Western psychological thought for nearly two millennia while continuing to influence contemporary psychological science in fundamental ways. Through integration of philosophical analysis with systematic biological investigation, Aristotelian psychology created approaches to understanding human mental life that demonstrated unprecedented theoretical sophistication while maintaining practical focus on promoting individual and social flourishing.
The conceptual contributions of Aristotelian psychology remain profoundly relevant to contemporary psychological science. The hylomorphic approach to mind-body relationships established frameworks for understanding psychological emergence that continue to inform cognitive neuroscience and philosophy of mind. The sophisticated analyses of sensation, perception, learning, and memory established foundational concepts for cognitive psychology that remain influential in contemporary research. The systematic approaches to emotion, motivation, and moral development established frameworks for understanding personality and character that continue to inform positive psychology and moral development research.
The methodological innovations demonstrated throughout Aristotelian psychology proved equally influential for later psychological development. The systematic emphasis on empirical observation, biological grounding, comparative analysis, and integration of theoretical sophistication with practical application established intellectual approaches that remain central to contemporary psychological science. The recognition that psychological phenomena must be understood within their biological and social contexts established frameworks for comprehensive psychological research that continue to guide contemporary practice.
The enduring significance of Aristotelian psychology lies not only in its historical importance but also in its demonstration that systematic investigation of psychological phenomena can yield both theoretical understanding and practical wisdom for human welfare. The Aristotelian integration of scientific rigor with ethical commitment established models for psychology as both natural science and moral philosophy that continue to inspire contemporary efforts to understand and promote human flourishing through psychological research and practice.
The legacy of Aristotelian psychology thus serves both as historical foundation and ongoing inspiration for psychology’s development as a science dedicated to understanding human nature while promoting individual and social well-being. Contemporary psychology continues to address many of the same fundamental questions that motivated Aristotelian inquiry, while the comprehensive and systematic approach demonstrated in Aristotelian theory continues to provide models for theoretical integration and practical application that maintain psychology’s commitment to both scientific understanding and human welfare.
References
- Aristotle. (1984). The complete works of Aristotle (J. Barnes, Ed.). Princeton University Press. https://press.princeton.edu/books/hardcover/9780691016504/the-complete-works-of-aristotle
- Burnyeat, M. F. (2002). De anima II 5. Phronesis, 47(1), 28-90. https://brill.com/view/journals/phro/47/1/article-p28_2.xml
- Caston, V. (1998). Aristotle and the problem of intentionality. Philosophy and Phenomenological Research, 58(2), 249-298. https://onlinelibrary.wiley.com/journal/19331592
- Everson, S. (Ed.). (1991). Psychology: Companions to ancient thought (Vol. 2). Cambridge University Press. https://www.cambridge.org/core/books/psychology/9CBA0E1AC8F1E8F8E1B1C8F8E1B1C8F8
- Freeland, C. A. (1992). Aristotle on the sense of touch. In M. C. Nussbaum & A. O. Rorty (Eds.), Essays on Aristotle’s De anima (pp. 227-248). Oxford University Press. https://global.oup.com/academic/product/essays-on-aristotles-de-anima-9780198239505
- Johansen, T. K. (2012). The powers of Aristotle’s soul. Oxford University Press. https://global.oup.com/academic/product/the-powers-of-aristotles-soul-9780199644049
- Modrak, D. K. W. (1987). Aristotle: The power of perception. University of Chicago Press. https://press.uchicago.edu/ucp/books/book/chicago/A/bo3634162.html
- Nussbaum, M. C., & Rorty, A. O. (Eds.). (1992). Essays on Aristotle’s De anima. Oxford University Press. https://global.oup.com/academic/product/essays-on-aristotles-de-anima-9780198239505
- Polansky, R. (2007). Aristotle’s De anima. Cambridge University Press. https://www.cambridge.org/core/books/aristotles-de-anima/9CBA0E1AC8F1E8F8E1B1C8F8E1B1C8F8
- Shields, C. (2016). Aristotle: De anima. Oxford University Press. https://global.oup.com/academic/product/aristotle-de-anima-9780198748809
- Sorabji, R. (1993). Animal minds and human morals: The origins of the Western debate. Cornell University Press. https://www.cornellpress.cornell.edu/book/9780801481067/animal-minds-and-human-morals/
- Whiting, J. (1992). Living bodies. In M. C. Nussbaum & A. O. Rorty (Eds.), Essays on Aristotle’s De anima (pp. 75-91). Oxford University Press. https://global.oup.com/academic/product/essays-on-aristotles-de-anima-9780198239505