The Intellectual Principle — rendered in the Plotinian corpus as Nous, Divine Mind, or the Intellectual-Principle — occupies the second hypostatic position in the Neoplatonic triad, subordinate only to the ineffable One yet sovereign over Soul and the generated cosmos. Across the Six Enneads, Plotinus elaborates this term with sustained systematic rigor: the Intellectual-Principle is simultaneously the totality of Authentic Being, the locus of the Ideas, and the act of self-knowing intellection. Its defining paradox is the identity of knower and known — the Principle does not search for its objects but is those objects; its vision is its existence. This identity distinguishes it sharply from discursive soul, which moves sequentially through partial cognitions. A second tension pervades the passages: the Intellectual-Principle is supremely rich yet derivative. It emanates from the One, which transcends it precisely because the One requires no intellection and suffers no duality. The Intellectual-Principle is thus both the highest cognitive achievement accessible to the ascending soul and a mark of the incompleteness that the One alone overcomes. For depth psychology's reception of Plotinus, this term anchors discussions of transpersonal cognition, the archetypes as living intellectual forms, and the structural difference between reflective self-knowledge and supra-rational unitive experience.
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28 passages
Being is itself an activity: there is one activity, then, in both or, rather, both are one thing. Being, therefore, and the Intellectual-Principle are one Nature: the Beings, and the Act of that which is, and the Intellectual-Principle thus constituted, all are one
This passage delivers the ontological core of the doctrine: the Intellectual-Principle and Authentic Being are not related as subject to object but are strictly identical, their apparent duality a product of discursive habit rather than reality.
The Authentic Beings must, then, exist before this All, no copies made on a model but themselves archetypes, primals, and the essence of the Intellectual-Principle.
Plotinus establishes that the Intellectual-Principle does not look outward to pre-existing models when generating the cosmos; rather, the archetypes are identical with its own essence, making it the immanent ground of all authentic form.
when it looks upon the authentic existences it is looking upon itself; its vision as its effective existence, and this efficacy is itself since the Intellectual-Principle and the Intellectual Act are one: this is an integral seeing itself by its entire being
The passage articulates the reflexive self-transparency of the Intellectual-Principle: its act of vision and its being are inseparable, distinguishing it from the soul's mediated, outward-directed cognition.
since the engendering Source is above the Intellectual-Principle, the secondary can only be that principle... the Act of the Intellectual-Principle is intellection, which means that, seeing the intellectual object towards which it has turned, it is consummated, so to speak, by that object, being in itself indeterminate like sight
Plotinus argues that the Intellectual-Principle is constitutively dependent on the One because its defining act — intellection — entails a duality of seer and seen, a dependency the One does not share.
Intellectual-Principle, thus, has two powers, first that of grasping intellectively its own content, the second that of an advancing and receiving whereby to know its transcendent; at first it sees, later by that seeing it takes possession of Intellectual-Principle, becoming one only thing with that
The passage distinguishes two operative modes of the Intellectual-Principle — immanent self-cognition and ecstatic ascent toward the One — marking the upper limit of intellective being before the supra-rational union.
The intellective power, therefore, when occupied with the intellectual act, must be in a state of duality, whether one of the two elements stand actually outside or both lie within: the intellectual act will always comport diversity
Plotinus shows that intellection structurally requires duality — even when knower and known are identical — thereby explaining why the Intellectual-Principle is a second hypostasis rather than the absolute unity of the One.
The Intellectual-Principle; beautiful; the most beautiful of all; lying lapped in pure light and in clear radiance; circumscribing the Nature of the Authentic Existents; the original of which this beautiful world is a shadow and an image
The passage characterizes the Intellectual-Principle as the supreme Beauty and archetypal light from which the sensible cosmos derives as a secondary image, establishing its role as ontological exemplar.
The greatest, later than the divine unity, must be the Divine Mind, and it must be the second of all existence, for it is that which sees The One on which alone it leans while the First has no need whatever of it.
The passage locates the Intellectual-Principle precisely in the hypostatic hierarchy: the greatest derivative being, constituted by its vision of the One, which itself remains entirely self-sufficient and independent.
The Unity, then, is not Intellectual-Principle but something higher still: Intellectual-Principle is still a being but that First is no being but precedent to all Being; it cannot be a being, for a being has what we may call the shape of its reality
By negation, Plotinus clarifies the upper boundary of the Intellectual-Principle: it possesses determinate being and form, features that disqualify it from identity with the formless, pre-ontological One.
The sensitive principle is our scout; the Intellectual-Principle our King... we are king when we are moulded to the Intellectual-Principle.
Plotinus maps the Intellectual-Principle onto the highest register of human psychology, asserting that the soul attains its regal dignity only through assimilation to this transcendent cognitive principle.
towards the Intellectual-Principle what is our relation?... This also we possess as the summit of our being. And we have It either as common to all or as our own immediate possession
Plotinus raises the question of human participation in the Intellectual-Principle, positing that it functions both as a universal shared reality and as the apex of each individual soul's own hierarchical constitution.
in the Intellectual-Principle Itself, there is complete identity of Knower and Known, and this not by way of domiciliation, as in the case of even the highest soul, but by Essence, by the fact that, there, no distinction exists between Being and Knowing
The passage distinguishes the soul's approach to self-knowledge — still characterized by habitation and partial proximity — from the Intellectual-Principle's essential, non-relational identity of subject and object.
All life belongs to it, life brilliant and perfect; thus all in it is at once life-principle and Intellectual-Principle, nothing in it aloof from either life or intellect: it is therefore self-sufficing and seeks nothing
Plotinus characterizes the Intellectual-Principle as the coincidence of life and intellect in perfect self-sufficiency, requiring no supplementation from without because it contains the totality of being within itself.
Its knowing is not by search but by possession, its blessedness inherent, not acquired; for all belongs to it eternally and it holds the authentic Eternity imitated by Time
The Intellectual-Principle's cognition is described as immediate possession rather than discursive search, and as the ground of authentic eternity of which temporal process is merely an image.
either the objects of the Intellectual-Principle are senseless and devoid of life and intellect or they are in possession of Intellect. Now, if they are in possession of Intellect, that realm is a union of both and is Truth. This combined Intellectual realm will be the Primal Intellect
Through a dilemma, Plotinus argues that the objects of the Intellectual-Principle must themselves be intellective, collapsing the distance between principle and content into a unified living truth.
The Intellectual-Principle is the earliest form of Life: it is the Activity presiding over the outflowing of the universal Order... it must of necessity derive from some other Being, from one that does not emanate but is the Principle of Emanation
The passage establishes the Intellectual-Principle as the first form of life and the proximate source of universal order, while simultaneously marking its derivative status as an emanation requiring a simpler, non-intellective source.
Intellection is not a primal either in the fact of being or in the value of being; it is secondary and derived: for there exists The Good; and this moves towards itself while its sequent is moved and by that movement has its characteristic vision.
Plotinus subordinates the Intellectual-Principle's defining act — intellection — to the Good itself, arguing that vision and self-intellection are movements toward a prior that has no need of such movement.
Are we, however, to make freedom and self-disposal exclusive to Intellectual-Principle as engaged in its characteristic Act, Intellectual-Principle unassociated, or do they belong also to soul acting under that guidance
Plotinus examines whether freedom is constitutive of the Intellectual-Principle alone or communicable to soul through alignment with it, probing the ethical and ontological relationship between the two hypostases.
the Idea is the Intellectual-Principle; and if that Principle must contain the Ideas complete, their cause must be contained in them. The Intellectual-Principle itself contains every cause of the things of its content
The passage asserts the complete immanence of causal structure within the Intellectual-Principle: the Ideas it contains are not externally caused but carry their own sufficient reasons as expressions of the Principle itself.
determined Life is Intellectual-Principle. And the multiplicity? As the multiplicity of Intellectual-Principles: all its multiplicity resolves itself into Intellectual-Principles
Plotinus identifies determinate life with Intellectual-Principle, resolving the multiplicity within the intelligible realm into a hierarchy of particular intellectual principles contained within the collective Nous.
Parmenides made some approach to the doctrine in identifying Being with Intellectual-Principle while separating Real Being from the realm of sense.
Plotinus situates his doctrine of the Intellectual-Principle within a philosophical genealogy, crediting Parmenides with an early, if imperfect, recognition of the identity of Being and intellect.
by Intellectual-Principle we know Intellectual-Principle. We reflect within ourselves there is life, there is intellect, not in extension but as power without magnitude, issue of Authentic Being
Plotinus establishes the epistemic principle that the Intellectual-Principle is known only through itself — cognition of this level requires the elevation of the knower to the same order of being.
The Intellectual-Principle and the Soul, being Ideal-Forms, would know Ideal-Forms and would have a natural tendency towards them
The passage grounds the epistemology of the Intellectual-Principle in ontological kinship: it knows Ideal-Forms because it is itself of that order, a like knowing like.
The Soul's true Good is in devotion to the Intellectual-Principle, its kin; evil to the Soul lies in frequenting strangers.
The ethical dimension of the Intellectual-Principle is stated: the soul's authentic good consists in orientation toward its higher kin, the Intellectual-Principle, while descent into the alien constitutes its evil.
there is the primally intellective and there is that in which intellection has taken another mode; but this indicates that what transcends the primarily intellective has no intellection
Plotinus draws the negative boundary above the Intellectual-Principle: whatever transcends the primally intellective — the One — must by definition be without intellection, preserving its absolute simplicity.
it would be the very height of absurdity to deny it to the nature of the Intellectual-Principle, presented thus as knowing the rest of things but not attaining to knowledge, or even awareness, of itself.
Plotinus dismisses the absurdity of denying self-knowledge to the Intellectual-Principle, using this reductio as a platform to explore the conditions under which genuine self-cognition is possible.
all is Intellect, the Principle and the ground on which it stands, alike
In describing the intelligible realm, Plotinus notes the total coincidence of principle and substrate in the intellectual world, where the medium and the beings it sustains are of one nature.
virtue and Intellectual-Principle and life and soul- reasoning soul, at least- belong to the idea of good and so therefore does all that a reasoned li
In a catalogue of goods, the Intellectual-Principle is ranked among the primary constituents of goodness, allied with virtue, life, and rational soul in the order of things that tend toward continuity and form.