The spleen occupies a modest but structurally significant position in the depth-psychological corpus, functioning less as a primary site of inquiry than as a node where somatic, humoral, and mythological registers converge. Plato's Timaeus furnishes the foundational account: the spleen is assigned as the neighbour and cleanser of the liver, absorbing the liver's impurities and thereby enabling hepatic divination to remain clear. This physiological teleology is inseparable from Plato's tripartite soul-geography, in which the viscera below the diaphragm collectively house the appetitive dimension of mortal life. The ancient allegorising impulse—recorded by Padel after Theagenes of Rhegium—assigned Dionysus to the spleen, yoking it to frenzy and porous receptivity. Onians and Padel together demonstrate how Greek medicine understood the spleen as a 'porous' organ that swells with absorbed fluid, placing it within a broader hydraulic theory of passion. McGilchrist's neuropsychological synthesis connects the medieval belief that the left-sided spleen secreted black bile to the etymology of both melancholy and the English word spleen as a mood-disorder. Jung, via Paracelsus, maps the spleen onto the astrological body of Saturn, while Schore and Damasio note its autonomic innervation, anchoring the organ within psychosomatic networks. The term thus traverses antiquity, Renaissance natural philosophy, and contemporary neuroscience.
In the library
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Black bile was, of course, associated with melancholy (literally, Greek melan-, black + chole, bile) and was thought to be produced by the spleen, a left-sided organ. For the same reasons the term spleen itself was, from the fourteenth century to the seventeenth
McGilchrist traces the etymological and humoral lineage connecting the spleen as a left-sided organ, black bile, and the historical English use of 'spleen' to denote melancholy, linking it to his broader argument about right-hemisphere dominance and mood.
McGilchrist, Iain, The Master and His Emissary: The Divided Brain and the Making of the Western World, 2009thesis
Such is the nature of the liver, which is placed as we have described in order that it may give prophetic intimations. During the life of each individual these intimations are plainer, but after his death the liver becomes blind, and delivers oracles too obscure to be intelligible. The neighbouring organ (the spleen) is situated on the left-hand side, and is c
Plato positions the spleen anatomically as the left-hand neighbour of the divinatory liver, establishing the organ's cosmological and psychic context within the Timaeus's account of mortal soul-geography.
Apollo represented the gall, Dionysus the spleen, Demeter the liver, and so on. In historical times, King Agesilaus supposedly lured the Spartans into war by writing VICTORY on his hand and imprinting it on the liver of a sacrifice.
Padel records the early allegorising tradition in which the spleen is assigned to Dionysus, embedding the organ within a divine-visceral system in which innards serve as the imprint and residence of specific gods.
Padel, Ruth, In and Out of the Mind Greek Images of the Tragic Self, 1994thesis
When the physician has brought the corpus astrale, that is, the physiological Saturn (spleen) or Jupiter (liver), into the right connection with heaven, then, says Paracelsus, he is 'on the right road.'
Jung transmits Paracelsus's astral-physiological schema in which the spleen is the somatic correspondent of Saturn, requiring astrological alignment for true healing—an explicitly depth-psychological reading of organ and planet as co-expressive.
Jung, Carl Gustav, The Spirit in Man, Art, and Literature, 1966thesis
It remains to specify the bodily seats of the emotions and of the appetites connected with nutrition. These are housed in the organs inside the trunk: heart, lungs, belly, liver, spleen, etc.
The Platonic commentary confirms that the spleen belongs to the cluster of visceral organs collectively constituting the somatic housing of emotion and appetite in Timaeus's body-soul anthropology.
Plato, Plato's cosmology the Timaeus of Plato, 1997supporting
The porous ones, like the spleen and lungs, 'enlarge when fluid is added.' When they 'receive or drink up the fluid... the porous hollows are filled.'
Padel documents the ancient Greek medical theory that classes the spleen among porous organs that passively absorb fluid, a hydraulic model directly relevant to Greek accounts of emotional flooding and passion.
Padel, Ruth, In and Out of the Mind Greek Images of the Tragic Self, 1994supporting
Historically, soul is to be found in the spleen, the liver, the stomach, the gall bladder, the intestines, the pituitary, and the lungs.
Moore invokes the historical dispersal of soul across multiple organs—including the spleen—to argue for the body's polycentricity as a field for psychic imagination, grounding care-of-the-soul practice in organ mythology.
Moore, Thomas, Care of the Soul Twenty-fifth Anniversary Edition: A Guide, 1992supporting
Even an organ such as the spleen, which is concerned largely with immunity, is innervated by the autonomic nervous system.
Damasio notes the autonomic innervation of the spleen within his somatic-marker framework, implicitly bridging ancient organ-soul intuitions with contemporary neuroscientific evidence for visceral participation in affective regulation.
Damasio, Antonio R., Descartes' Error: Emotion, Reason, and the Human Brain, 1994supporting
neuroendocrine output of the hypothalamus in turn influences the postnatal growth of brain stem and peripheral structures that innervate the thymus, lymph nodes, and spleen.
Schore situates the spleen within a hierarchical psychoneuroimmunological network, showing how cortically processed emotional experience ultimately regulates peripheral immune organs including the spleen.
Schore, Allan N., Affect Regulation and the Origin of the Self: The Neurobiology of Emotional Development, 1994supporting
Pagel, W. 1981. 'The Smiling Spleen.' In H. Lloyd-Jones, V. Pearl, and B. Worden, eds., History and Imagination: Essays in Honour of H. R. Trevor-Rop
Padel's bibliographic citation of Pagel's 'The Smiling Spleen' flags a dedicated intellectual history of the organ that the depth-psychological corpus invokes but does not reproduce in full.
Padel, Ruth, In and Out of the Mind Greek Images of the Tragic Self, 1994aside
Contained within the five internal organs are seven marvelous powers, with the spleen and kidneys having two each.
Hakuin's Taoist-inflected physiology assigns special vitality to the spleen within a Chinese five-organ schema, offering a non-Western parallel to the Western humoral tradition of psychic organ-attribution.
Hakuin Ekaku, Wild Ivy: The Spiritual Autobiography of Zen Master Hakuin, 1999aside
O'1tAQV, <Y1tATJVO" [m.] 'spleen' (lA), metaphorically 'compress' (Hp.), cf. -lov; aiy6� a1tA�V a plant name 'mallow, cheeseweed' (Ps.-Dsc.).
Beekes traces the Proto-Indo-European root of the Greek word for spleen and its metaphorical extensions, providing the etymological substrate from which later psychological and humoral usage developed.
Beekes, Robert, Etymological Dictionary of Greek, 2010aside