The conceptual foundation on which the framework rests, drawn primarily from Zubiri.
Psyche BZE / Zubiri
The psyche is the sentient dimension of a living organism — that structural aspect of the whole organism through which it feels, apprehends, and responds to what surrounds it, as a genuine, co-determining note of the single psycho-organic substantivity it is. Psychic life is present across the animal world wherever living matter is sufficiently organized to give rise to genuine sensing. In humans, the psyche is distinctively intellective: it orients the organism toward reality as reality, not merely as stimulus, grounding the distinctively human capacity to take charge of one's own life.
The Framework page develops this account further — distinguishing psyche's reality from substantivity, clarifying its relation to the brain, and separating psyche-as-structure from psychism as its exercise. What follows is the philosophical architecture beneath that account, in Zubiri's own terms. Psychism is the exercise — the lived actualization — of psyche.
On Zubiri's account, psyche arises through a process he calls elevation — cellular structures themselves are brought to produce notes that bear the formality of reality, not by adding something to matter but by matter giving of itself in a new way. The human substantivity is constituted from cellular substantivities that give of themselves to the higher system; nothing lower is consumed or replaced, only taken up into a new level of reality. The progression from susceptibility through sensitivity to full psychic makeup is a real structural sequence, with each level dynamically subtended by the one below. This is materism, not materialism: all reality arises from within matter and carries a moment of matter in its essence, yet what is produced is not exhausted by its material conditions. In the human, this elevated substantivity is constituted as a person — not merely a being with properties, but a being whose mode of reality is to relate to things, to others, and to itself in and through the character of reality those things have.
Psychism Zubiri / Janet
Psychism is the exercise of psyche — not the structural dimension itself but its dynamic actualization in living. Where psyche names what the organism is as a sentient reality, psychism names what the organism does with that reality: the ongoing activity of sensing, apprehending, responding, and orienting that constitutes the life of a psychic being across time. Psyche is the structure; psychism is its exercise. The distinction matters because pathology can be understood either as a structural deficit in psyche itself or as a disorder of psychism — a failure of exercise — while the underlying capacity remains intact.
In the phenomenological tradition, Levinas used psychism to name the soul's active work of self-constitution — the accomplishment of interiority itself. For Levinas, psychism was not a given property of the person but an achievement: the self becoming interior, separated, and capable of inner life.
This distinction finds a striking parallel in Pierre Janet's account of psychological functioning. Janet proposed that mental life is hierarchically organized, with what he called superior functions — voluntary attention, synthesis, reality-testing, willed action — sitting above more automatic, dissociable lower functions. Superior functions are precisely those activities that require the full exercise of psychic capacity: they demand integration, effort, and the orientation toward reality that Zubiri identifies as distinctively human psychism. Janet observed that under conditions of stress, exhaustion, or trauma, superior functions are the first to fail — the organism retreats toward automatic, lower-level functioning not because psyche is destroyed but because psychism is depleted. The hierarchy collapses from the top down.
The BZE's α_total parameter — the coupling constant between somatic and cognitive capacity — can be read as a formal measure of the condition of psychism: how fully the organism is able to exercise its psychic structure at a given moment. A low α_total does not mean the psyche is absent or damaged; it means psychism is impaired — the exercise is curtailed, the superior functions are suppressed, and the organism is functioning below its structural potential. Janet's clinical observation that psychological tension (force psychologique) must reach a threshold before superior functions become available maps directly onto the BZE's threshold conditions for agency B(t) and coupling α_total. Below threshold, psychism contracts. Above it, the full range of human psychic activity becomes available again.
Substantivity sustantividad Zubiri
A closed system of co-determined notes with constitutional sufficiency — a reality that is de suyo, belonging to itself. Distinct from classical substance: a substantivity is not a substrate with attached properties, but a system whose notes are what they are only through their position in the systematic closure of the whole. The human being is a single psychosomatic substantivity.
Note nota Zubiri
A constitutional element of a substantivity, distinct from an Aristotelian substance, property or accident. Each note of a substantivity is co-determined by every other note in the system; no note exists independently of its position in the closed system. Weight, e.g., is a note of a system, as is energy level and skin tone. In the human psychosomatic substantivity, psychic and somatic notes are mutually constitutive — neither class is reducible to the other nor separable from it.
Brotar (to spring forth) Zubiri
The relation by which psyche arises from biological structure — not as an effect produced by a cause, and not as an emergent property atop a substrate, but as the living self-actualization of the psycho-organic system through its own cellular architecture. The framework proposes that mitochondrial psychobiology (following Martin Picard's work) offers a contemporary scientific resonance for brotar: lived experience appearing to be structurally registered in cellular energy networks.
Hacerse cargo (to take charge) Zubiri
The distinctive function of the human psyche: to apprehend things in their character of reality rather than merely as stimuli, and to relate to oneself and to the world as real rather than as stimulus-response. To take charge means to behave in relation to reality qua reality — a mode of being that constitutes personhood and grounds agency. The telic drive (IDA) that powers Behavioural Agency (B) is the active form of this taking-charge.
De suyo (of its own) Zubiri
The character of belonging to oneself, possessing one's own reality. A substantivity is de suyo when its constitutional closure is achieved — when the system has what it needs to be what it is, rather than depending on external imposition. The living human substantivity is de suyo in a stronger sense than mere physical substantivities because it actively maintains its own closure.
Religation religación Zubiri
The human being's constitutive openness to what grounds existence itself — a structural feature of human reality rather than an added religious belief. Zubiri described the human as "religated" to the power of the real, whether that power is named God, Being, Nature, or left unnamed. In the BZE, religation is honored through the philosophical openness of the conditional bar (|) in the equation; the framework remains metaphysically uncommitted.