What is ‘pure form’?
Since time immemorial human beings have been prone to extraordinary experiences where they feel that they have ascended to a world of purity & wonder far beyond everyday concerns. However, the ways in which such experiences of pure, luminous forms have been understood has differed widely from culture to culture. A particularly interesting contrast is found between how such experiences of pure beauty were understood in the Buddhist east, and how they were understood in Greco-Roman culture – especially Platonism, which placed a high philosophical value on the knowledge of pure Forms of beauty and truth.
It is certainly true that both Buddhism and Platonism posit a level of reality characterized by ‘pure forms’, but it would be unwise to equate these exactly. For Platonism the Forms are marked by true reality. For Buddhism the loka or realm of pure form (rūpa-loka) is marked by subtle forms of illusion & subtle blissful sensations. Although useful to the meditator, the rūpa-loka doesn’t have the characteristic of being closer to the absolute truth than ordinary sense experience.
To investigate this further I will start with the Theravada Buddhism of Southeast Asia which is based on the suttas, the earliest strata of scriptures shared by all schools. So in classical Theravāda cosmology and in the Abhidharma (that is the scholastic tradition based on the suttas), the rūpa-loka (the realm of subtle form, is accessible via the lower jhānas or absorption states of meditation. It occupies a fascinating middle ground. Undeniably higher, refined, and freer from gross delusion than the kāma-loka (the realm of ordinary sense desire). Yet, strictly speaking, it is not “closer to ultimate truth” (paramattha sacca).
To understand why, it helps to look at how Buddhist thought contrasts with Platonism on what constitutes reality, and why the rūpa-Loka is higher than normal sense experience, yet still characterized by illusion.
In Platonism, moving up the divide from physical objects to the Forms is an ascent toward Truth. Physical things are mere copies or shadows (mimesis).
In Buddhism, moving from the kāma-loka to the rūpa-loka is an ascent in refinement, peace, and cognitive clarity, but not a move toward ultimate reality. The rūpa-loka remains conditioned (Saṅkhata). It is created through the cultivation of deep meditative absorption. But because it has a cause, it is subject to impermanence (anicca) and lacks inherent existence (anattā). The eternal quality of pure Platonic forms does not apply here; even a deity born in the highest brahma realm will eventually exhaust their karma and fall back.
This is because subtle delusion (Moha) Persists. While the gross defilements of sensual desire (kāmachanda) and ill will (vyāpāda) are suppressed in the rūpa-loka, subtle ignorance remains fully intact. In fact, Buddhist texts warn that the rūpa-loka is particularly dangerous precisely because its refined bliss and luminous stability mimic Liberation (Nibbāna), leading meditators to mistake a high state of concentration for Enlightenment.
In Buddhism, there is only one unconditioned timeless truth (asaṅkhata dhamma): Nibbāna. Everything else—whether a coarse pebble in the sense realm or a luminous, ethereal structure in the highest jhāna—belongs to the realm of conditioned phenomena. In terms of ultimate truth, a golden cage and an iron cage are both cages.
However, while the rūpa-loka is not itself “The Truth,” it provides the epistemic environment necessary to see the truth.
In the Sutta tradition, pure form states act as a supreme lens. Ordinary sense experience (kāma) is like turbulent, muddy water where light refracts unpredictably. The rūpa states still the water and clear the sediment. When a meditator cultivates these states regularly, the mind is said possesses qualities vital for insight:
The mental factors present in the rūpa-loka (such as single-pointedness, joy, and equanimity) allow for powerful stable observation.
By observing that even these refined, radiant forms arise and pass away, the meditator sees that nothing in conditioned existence is worth clinging to – a realization far harder to achieve amidst noisy, coarse sense data.
In short: the rūpa-loka is not closer to the Truth in its nature, but it is closer to the Truth in its utility. It is like a high-magnification microscope – not the specimen you are trying to understand, but the instrument that lets you see reality as it actually is.
Indeed, the fact that rupa in Buddhism and eidos in Platonism are both often translated by the word ‘form’ may be misleading. The forms in Platonism are universal objects. Instead of apprehending amongst individual objects or beings that they are the same or different to each other, or beautiful, or large, or with some other virtue, one apprehends Beauty itself, or Sameness itself, or even Being and Unity themselves. Whereas in Buddhism the pure forms are apparently particular luminous forms apprehended by particular beings.
However, when we move up from the rūpa-loka, to the even more subtle levels of the ‘formless realms’ or arūpa-lokas, the situation is a bit different. These levels are characterised in a way that sounds more epistemological. There is the loka of infinite space, then infinite consciousness, then neither perception nor non-perception. These are not ‘eternal forms’ in the platonic sense, but they do sound more like basic building blocks of perception in a very refined form.
Also, we should not forget that whilst in Platonism the forms are given a high ontological status, in Neoplatonism, at any rate, they are not the ultimate reality – not the One beyond being. The philosopher in touch with the Forms must reach beyond them towards the final truth. Just as ‘Devas of the path’ wish to go beyond the rūpa-loka towards unconditioned realization.
In Neoplatonism – as systematized by the 3rd century Roman philosopher Plotinus – the Intellect (Nous) housing the Forms is only the second hypostasis of three descending levels of reality. The Forms represent multiplicity-in-unity; because they can be differentiated and intellected, they possess structure, and thus fall short of absolute simplicity. Ultimate reality belongs solely to The One (To Hen), which is strictly epekeina tes ousias – beyond being, beyond substance, completely ineffable, and the source of all being, all existence, which comes after it.
So, both traditions construct a ladder where the realm of pure form serves as a crucial transit station rather than the ultimate destination.
Plato’s Forms are a radiant intellectual order of eternal archetypes.
The rūpa-loka is characterized by luminous, refined mental states (jhānic bliss), in which the objects of perception seem to be luminous, pure and eternal.
Just as Plotinus insists that remaining at the level of Nous leaves on in the realm of Being rather than reaching the Source, Buddhist soteriology warns that rebirth as a long-lived Deva in the rūpa-loka is still bound to the wheel (saṃsāra). To dwell as a high god or Brahma in the even more subtle extension of the arūpa-loka, is ultimately no better. You may be able to stay there for an aeon or two but in the end the subtle bliss of ‘formless forms’ must be seen through. If you don’t see through it, the conditions that sustained it will eventually be exhausted and you will descend involuntarily to a lower state.
There are also parallels in the path of practice as regards moving from form to that which is beyond form. To reach the One, the Neoplatonist must undergo henosis – a detachment from intellection itself, as the Forms are still dualistic (subject knowing object). Similarly, to reach Nibbāna, the Buddhist must abandon attachment to rūpa-lokas & arūpa-lokas and ultimately step beyond all conditioned phenomena.
Because both destinations transcend structural forms, they can only be described apophatically. Plotinus speaks of The One in terms of what it is not (neither being, nor non being, nor essence), directly echoing the Udāna’s famous description of Nibbāna as unborn, unbecome, unmade, unconditioned.
However, where these traditions part ways is in the metaphysical nature of the ultimate.
For Plotinus, The One is an overflowing, transcendent Plenitude – the hyper-real generator of all being from which reality emanates. For Buddhism, Nibbāna is not a generative source or a primal cause from which the world emanates, but the extinction of the fires of greed, hatred, and delusion – the complete cessation of dependently originated conditions of experience (paṭiccasamuppāda).
In both frameworks, the realm of pure form is, so to speak, a vital intermediate destination, but stopping there is a metaphysical cul de sac. For Platonism the Forms however, have considerable ontological weight. They are the source of all form and structure in everyday experience. For Buddhism experience of pure forms, or indeed of formless forms, is simply that, an experience that arises and ceases in dependence and conditions.
However, if we move from Theravāda Abhidharma to Tibetan traditions like Dzogchen, Mahāmudrā, or the Shentong (other-emptiness) philosophical school, the structural and phenomenological parallels to Neoplatonism become far stronger.
In these non-dual traditions, reality is understood through the lens of primordial awareness, or innate luminous non-dual consciousness. I will focus here on the Dzogchen tradition for which this state of awareness is known as rigpa, and is said to possess three indivisible dimensions.
1. Essence (Ngo bo): Primordially pure and empty (Ka dag).
2. Nature (Rang bzhin): Spontaneously luminous and clear (Lhun grub).
3. Compassionate Capacity (Thugs rje): Unimpeded, expressive, and all-pervading.
For Dzogchen the Base or Ground is primordially pure emptiness, non-conceptual, beyond existence and non-existence. All phenomena manifest as the dynamic ‘ornament’ or ‘play’ (Rölpa) of Rigpa without ever separating from it. Samsara and Nirvana are both the ‘luminous self-display’ (Rang-snang) of mind’s true nature.
To illustrate how Rigpa sustains everything without itself being involved in the network of conditions, the tradition uses three metaphors.
The Sky and Clouds: Clouds (conditioned phenomena) form, transform, and dissolve based on weather patterns (causes and conditions). The sky (Rigpa) allows all clouds to appear within it, yet the sky itself is never stained, reshaped, or conditioned by the storm.
The Mirror and Reflections: A mirror shows beautiful or terrifying images (samsara/nirvana). The images depend on external objects and light, but the mirror’s reflective surface is never altered, dirty, or improved by what appears in it.
The Ocean and Waves: Waves (individual thoughts and appearances) rise and fall due to the wind of karma. The underlying water (the nature of awareness) never leaves its fluid state regardless of how violent the surface waves become.
Unlike classical Sutta/Abhidharma Buddhism, which treats consciousness as dependently arisen alongside sense objects, Dzogchen positions primordial awareness as the fundamental ground of reality. All cosmic manifestations – pure ‘Divine’ mandalas or coarse, confused samsaric projections – are light-forms arising from this single, luminous source. This aligns well with Plotinus’s view of Nous and Psyche emanating from the One.
Furthermore, in Dzogchen practice (specifically Tögal or the ‘Direct Crossing’), the practitioner works directly with the luminous display of the Ground. Here, pure vision manifests as circles of light (thigle), deific forms, and mandalas. These are not created by the mind; they are the inherent, primordial architecture of awareness itself – strikingly similar to how Plotinian Forms reside eternally within Nous.
In Plotinian Neoplatonism, the Soul doesn’t create its divine nature; it simply awakens from its sleep/forgetfulness (amnesia). Likewise, Dzogchen is a ‘resultant vehicle’ (phala-yāna): enlightenment is not built brick-by-brick, but achieved by recognizing the naturally present, uncreated perfection (Lhun grub) that was never lost.
Nevertheless, there is no exact equivalence. Even in Dzogchen, two fundamental Buddhist tenets hold firm. Emptiness (Śūnyatā) and lack of an essential first cause.
Plotinus’s One is often conceived as a hyper-substantial source of ultimate Being. Plotinus is very careful about how he speaks about this. The One is not strictly speaking a cause, but in some ineffable way it overflows in its fullness. It thus gives rise to the pure intellect of Nous. This level, which contains the Forms, is involved in causation and produces the levels of inner Soul and of outer material forms below it. Thus, we have a descending chain of causation, or rather, to use more strictly platonic language, of participation, in which each level gains its essential being by participating in the level above it.
But in Dzogchen, Rigpa is explicitly empty of active causation. It is a luminance that has no substance – a mirror’s capacity to reflect, rather than a light source. Forms only appear to arise and dissolve within its luminescent emptiness.
Neoplatonism leans toward a cosmic teleology or emanation chain extending from the highest levels of existence to the dark, unformed potentiality of matter. Existence is not so much like a mirror in which forms appear, but more like a descending fountain, or a spreading and diffusing stream of light, arising from a central source.
Dzogchen avoids calling the Ground a ‘creator’ or ‘primal cause’ to avoid falling into eternalism (Śāśvatavāda). The display is described as interdependent, unceasing appearance rather than a descending series of hypostases.
Nevertheless, if you are looking for a bridge between Western classical idealism and Eastern contemplative metaphysics, the Dzogchen view of Rigpa as Luminous Empty Source is about as close as a Buddhist school gets to Plotinian Neoplatonism.