Stability in the depth-psychology and philosophical corpus is never merely the absence of change; it is a contested ontological and ethical achievement whose conditions, limits, and proper valuation form a persistent axis of dispute. Plotinus establishes the most architecturally ambitious account: Stability is not an attribute of Being but its very ground, a pre-motional condition that pervades intellection and from which motion itself is issued without being initiated by it. In this Neoplatonic register, every subsequent existent participates in Stability as both origin and telos. Nussbaum's sustained engagement with the Greek ethical tradition frames Stability as a criterion of value—the Platonic impulse to prize only those goods immune from fortune—while insisting, with Aristotle and the tragedians, that the exclusive pursuit of Stability impoverishes the good human life, severing it from the relational, contingent goods that give it fullness. For the Stoics, as examined by Graver, Stability characterizes virtue not because it is a scalar hexis subject to degrees but because the virtues, once achieved, cannot be lost short of the dissolution of rationality itself; the concept thus migrates from cosmology to character psychology. Simondon introduces a systems-theoretical inflection: stability and metastability are structural domains that delimit the typological conditions within which individuation proceeds. Jung invokes ego-stability as the functional prerequisite by which the transcendent function's mediatory product survives the dissolutive pressure of opposing psychic forces. Together these voices reveal Stability as a term bridging cosmology, ethics, and psychology—always contested between those who see it as the supreme good and those who treat it as one value among many.
Being, the most firmly set of all things, that in virtue of which all other things receive Stability, possesses this Stability not as from without but as springing within, as inherent. Stability is the goal of intellection
Plotinus argues that Stability is the intrinsic, non-externally-derived ground of Being itself, simultaneously the origin and telos of intellection, pervading all subsequent existents as a universal genus.
, The Six Enneads, 270thesis
All the philosophers, I argued, seek to limit those risks for the sake of stability of life. Some of them go too far, producing an account of the good that is impoverished and narrow. But some emphasis on stability is reasonable and essential
Nussbaum argues that while some orientation toward stability is ethically necessary, the philosophical tradition's tendency to exalt it as the supreme criterion of value distorts and narrows the good human life.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986thesis
if, as a result of the stability of the ego, neither side succeeds in dissolving the mediatory product, this is sufficient demonstration that it is superior to both. The stability of the ego and the superiority of the mediatory product to both thesis and antithesis
Jung identifies ego-stability as the psychological condition that allows the transcendent function's mediatory product to withstand the dissolving pressures of opposing psychic forces, thereby demonstrating its synthetic superiority.
, Psychological Types, 1921thesis
Stability: (a) of activity. The activity can continue in the same way, without cessation, abatement or variation... (b) Of objects. The obj
Nussbaum reconstructs Plato's Philebus account of intrinsic value, showing that Stability—both of activity and of its objects—functions as a formal criterion distinguishing true from apparent goods.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986thesis
In Aristotle, though, the distinguishing factor is stability, with the hexis being the stable type. In Stoic usage, by contrast, the distinguishing factor is whether the condition is scalar or nonscalar... stability is not what makes a condition a diathesis
Graver demonstrates that Stoic psychology redefines the Aristotelian criterion of stability in characterological dispositions, replacing it with the scalar/nonscalar distinction, though the virtues happen to be stable as a contingent feature.
, Stoicism and Emotion, 2007thesis
it is possible based on the discontinuities of conditions to define types that correspond to domains of stability or metastability; then, within these types, it is possible to define particular beings that differ from one another
Simondon reformulates stability as a topological domain condition—a field of metastability—within which individuation and typological differentiation become possible, rather than as a property of finished individuals.
, Individuation in Light of Notions of Form and Information, 2020supporting
stability, purity, and truth may be achieved without separated forms. Even an Aristotelian biologist will be able to insist that what he studies are the stable kinds that replicate themselves in the same way in nature.
Nussbaum argues that stability as a criterion of value can be preserved within a naturalistic framework without requiring Platonic separated forms, pointing toward an immanent account of stable kinds.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986supporting
What view are we to take of that which is opposed to Motion, whether it be Stability or Rest?... we should be well advised to assign Stability to the Intellectual, and to look in the lower sphere for Rest alone.
Plotinus distinguishes Stability, which belongs properly to the Intellectual realm, from mere Rest in the material sphere, reinforcing the hierarchical ontology in which genuine Stability is a mark of higher being.
, The Six Enneads, 270supporting
human excellence, once developed, is something stable; but if they are big or deep or frequent enough, catastrophes will 'pollute' good activity, and therefore the good life
Nussbaum reads Aristotle as acknowledging that human excellence possesses a relative but not absolute stability, remaining vulnerable to catastrophic disruption by misfortune.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986supporting
The question of what might give the brain a natural means to generate the singular and stable reference we call self has remained unanswered.
Damasio frames the neurological problem of selfhood in terms of the brain's need to generate a stable reference point, linking stability to the constitution of conscious identity.
, The Feeling of What Happens: Body and Emotion in the Making of Consciousness, 1999supporting
Eudaimonia... and tuche, 318-42, 384, 386; see also Activity, role in good life, Stability, Vulnerability
In Nussbaum's index, Stability appears as a co-indexed term alongside eudaimonia, tuche, and vulnerability, confirming its systematic role as a structuring concept throughout the ethical argument.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986aside
Self-sufficiency... Platonic conception of, 5, 18, 87, 120, 137, 159, 184, 264, 310, 381, 420; see also Consistency, Eudaimonia, Excellence, human, Plato, Stabil
Nussbaum's index cross-references Stability with self-sufficiency and eudaimonia as paired conceptual coordinates within Platonic and Aristotelian ethical theory.
, The Fragility of Goodness: Luck and Ethics in Greek Tragedy and Philosophy, 1986aside