Buddhist cosmology

Buddhist cosmology is the description of the shape and evolution of the universe according to the canonical Buddhist scriptures and commentaries।

Introduction

The self-consistent Buddhist cosmology which is presented in commentaries and works of Abhidharma in both Theravāda and Mahāyāna traditions, is the end-product of an analysis and reconciliation of cosmological comments found in the Buddhist sūtra and vinaya traditions. No single sūtra sets out the entire structure of the universe. However, in several sūtras the Buddha describes other worlds and states of being, and other sūtras describe the origin and destruction of the universe. The synthesis of these data into a single comprehensive system must have taken place early in the history of Buddhism, as the system described in the Pāli Vibhajyavāda tradition (represented by today's Theravādins) agrees, despite some trivial inconsistencies of nomenclature, with the Sarvāstivāda tradition which is preserved by Mahāyāna Buddhists.

The picture of the world presented in Buddhist cosmological descriptions cannot be taken as a literal description of the shape of the universe. It is inconsistent, and cannot be made consistent, with astronomical data that were already known in ancient India. However, it is not intended to be a description of how ordinary humans perceive their world; rather, it is the universe as seen through the divyacakṣus (Pāli: dibbacakkhu), the "divine eye" by which a Buddha or an arhat who has cultivated this faculty can perceive all of the other worlds and the beings arising (being born) and passing away (dying) within them, and can tell from what state they have been reborn and into what state they will be reborn. The cosmology has also been interpreted in a symbolical or allegorical sense (see Ten spiritual realms).

Buddhist cosmology can be divided into two related kinds: spatial cosmology, which describes the arrangement of the various worlds within the universe, and temporal cosmology, which describes how those worlds come into existence, and how they pass away।

Spatial cosmology

Spatial cosmology can also be divided into two branches. The vertical (or cakravāḍa) cosmology describes the arrangement of worlds in a vertical pattern, some being higher and some lower. By contrast, the horizontal (sahasra) cosmology describes the grouping of these vertical worlds into sets of thousands, millions or billions।

Vertical cosmology

In the vertical cosmology, the universe exists of many worlds (lokāḥ) – one might say "planes" – stacked one upon the next in layers. Each world corresponds to a mental state or a state of being. A world is not, however, a location so much as it is the beings which compose it; it is sustained by their karma and if the beings in a world all die or disappear, the world disappears too. Likewise, a world comes into existence when the first being is born into it. The physical separation is not so important as the difference in mental state; humans and animals, though they partially share the same physical environments, still belong to different worlds because their minds perceive and react to those environments differently.

The vertical cosmology is divided into thirty-one planes of existence and the planes into three realms, or dhātus, each corresponding to a different type of mentality. These three (Tridhātu) are the Ārūpyadhātu, the Rūpadhātu, and the Kāmadhātu. This technical division does not correspond to the more informal categorization of the "six realms". In the latter scheme, all of the beings born in the Ārūpyadhātu and the Rūpadhātu may be classified as "gods" or "deities" (devāḥ), as can a considerable fraction of the beings born in the Kāmadhātu, even though the deities of the Kāmadhātu differ more from those of the Ārūpyadhātu than they do from humans. It is to be understood that deva is an imprecise term referring to any being living in a longer-lived and generally more blissful state than humans. Most of them are not "gods" in the common sense of the term, having little or no concern with the human world and rarely if ever interacting with it; only the lowest deities of the Kāmadhātu correspond to the gods described in many polytheistic religions.

The term "brahmā" is used both as a name and as a generic term for one of the higher devas। In its broadest sense, it can refer to any of the inhabitants of the Ārūpyadhātu and the Rūpadhātu. In more restricted senses, it can refer to an inhabitant of one of the nine lower worlds of the Rūpadhātu, or in its narrowest sense, to the three lowest worlds of the Rūpadhātu. A large number of devas use the name "Brahmā", e.g. Brahmā Sahampati, Brahmā Sanatkumāra, Baka Brahmā, etc. It is not always clear which world they belong to, although it must always be one of the worlds of the Rūpadhātu below the Śuddhāvāsa worlds.

Ārūpyadhātu

The Ārūpyadhātu (Sanskrit) or Arūpaloka (Pāli) (Tib: gzugs.med.pa'i khams) or "Formless realm" would have no place in a purely physical cosmology, as none of the beings inhabiting it has either shape or location; and correspondingly, the realm has no location either. This realm belongs to those devas who attained and remained in the Four Formless Absorptions (catuḥ-samāpatti) of the arūpadhyānas in a previous life, and now enjoys the fruits (vipāka) of the good karma of that accomplishment. Bodhisattvas, however, are never born in the Ārūpyadhātu even when they have attained the arūpadhyānas.

There are four types of Ārūpyadhātu devas, corresponding to the four types of arūpadhyānas:

• Naivasaṃjñānāsaṃjñāyatana or Nevasaññānāsaññāyatana (Tib: 'du.shes.med 'du.shes.med.min) "Sphere of neither perception nor non-perception". In this sphere the formless beings have gone beyond a mere negation of perception and have attained a liminal state where they do not engage in "perception" (saṃjñā, recognition of particulars by their marks) but are not wholly unconscious. This was the sphere reached by Udraka Rāmaputra (Pāli: Uddaka Rāmaputta), the second of the Buddha's two teachers, who considered it equivalent to enlightenment.

• Ākiṃcanyāyatana or Ākiñcaññāyatana (Tib: ci.yang.med) "Sphere of Nothingness" (literally "lacking anything"). In this sphere formless beings dwell contemplating upon the thought that "there is no thing". This is considered a form of perception, though a very subtle one. This was the sphere reached by Ārāḍa Kālāma (Pāli: Āḷāra Kālāma), the first of the Buddha's two teachers; he considered it to be equivalent to enlightenment.

• Vijñānānantyāyatana or Viññāṇānañcāyatana or more commonly the contracted form Viññāṇañcāyatana (Tib: rnam.shes mtha'.yas) "Sphere of Infinite Consciousness". In this sphere formless beings dwell meditating on their consciousness (vijñāna) as infinitely pervasive.

• Ākāśānantyāyatana or Ākāsānañcāyatana (Tib: nam.mkha' mtha'.yas) "Sphere of Infinite Space"। In this sphere formless beings dwell meditating upon space or extension (ākāśa) as infinitely pervasive.

Rūpadhātu

The Rūpadhātu (Pāli: Rūpaloka; Tib: gzugs.kyi khams) or "Form realm" is, as the name implies, the first of the physical realms; its inhabitants all have a location and bodies of a sort, though those bodies are composed of a subtle substance which is of itself invisible to the inhabitants of the Kāmadhātu. According to the Janavasabha Sutta, when a brahma (a being from the Brahma-world of the Rūpadhātu) wishes to visit a deva of the Trāyastriṃśa heaven (in the Kāmadhātu), he has to assume a "grosser form" in order to be visible to them.

The beings of the Form realm are not subject to the extremes of pleasure and pain, or governed by desires for things pleasing to the senses, as the beings of the Kāmadhātu are. The bodies of Form realm beings do not have sexual distinctions.

Like the beings of the Ārūpyadhātu, the dwellers in the Rūpadhātu have minds corresponding to the dhyānas (Pāli: jhānas). In their case it is the four lower dhyānas or rūpadhyānas. However, although the beings of the Rūpadhātu can be divided into four broad grades corresponding to these four dhyānas, each of them is subdivided into further grades, three for each of the four dhyānas and five for the Śuddhāvāsa devas, for a total of seventeen grades (the Theravāda tradition counts one less grade in the highest dhyāna for a total of sixteen).

Physically, the Rūpadhātu consists of a series of planes stacked on top of each other, each one in a series of steps half the size of the previous one as one descends. In part, this reflects the fact that the devas are also thought of as physically larger on the higher planes. The highest planes are also broader in extent than the ones lower down, as discussed in the section on Sahasra cosmology. The height of these planes is expressed in yojanas, a measurement of very uncertain length, but sometimes taken to be about 4,000 times the height of a man, and so approximately 4।54 miles or 7.32 kilometers.

Śuddhāvāsa worlds

The Śuddhāvāsa (Pāli: Suddhāvāsa; Tib: gnas gtsang.ma) worlds, or "Pure Abodes", are distinct from the other worlds of the Rūpadhātu in that they do not house beings who have been born there through ordinary merit or meditative attainments, but only those Anāgāmins ("Non-returners") who are already on the path to Arhat-hood and who will attain enlightenment directly from the Śuddhāvāsa worlds without being reborn in a lower plane (Anāgāmins can also be born on lower planes). Every Śuddhāvāsa deva is therefore a protector of Buddhism. Because a Śuddhāvāsa deva will never be reborn outside the Śuddhāvāsa worlds, no Bodhisattva is ever born in these worlds, as a Bodhisattva must ultimately be reborn as a human being.

Since these devas rise from lower planes only due to the teaching of a Buddha, they can remain empty for very long periods if no Buddha arises. However, unlike the lower worlds, the Śuddhāvāsa worlds are never destroyed by natural catastrophe. The Śuddhāvāsa devas predict the coming of a Buddha and, taking the guise of brahmins, reveal to human beings the signs by which a Buddha can be recognized. They also ensure that a Bodhisattva in his last life will see the four signs that will lead to his renunciation.

The five Śuddhāvāsa worlds are:

• Akaniṣṭha or Akaniṭṭha – World of devas "equal in rank" (literally: having no one as the youngest). The highest of all the Rūpadhātu worlds, it is often used to refer to the highest extreme of the universe. The current Śakra will eventually be born there. The duration of life in Akaniṣṭha is 16,000 kalpas (Vibhajyavāda tradition). The height of this world is 167,772,160 yojanas above the Earth.

• Sudarśana or Sudassī – The "clear-seeing" devas live in a world similar to and friendly with the Akaniṣṭha world. The height of this world is 83,886,080 yojanas above the Earth.

• Sudṛśa or Sudassa – The world of the "beautiful" devas are said to be the place of rebirth for five kinds of anāgāmins. The height of this world is 41,943,040 yojanas above the Earth.

• Atapa or Atappa – The world of the "untroubled" devas, whose company those of lower realms wish for. The height of this world is 20,971,520 yojanas above the Earth.

• Avṛha or Aviha – The world of the "not falling" devas, perhaps the most common destination for reborn Anāgāmins. Many achieve arhatship directly in this world, but some pass away and are reborn in sequentially higher worlds of the Pure Abodes until they are at last reborn in the Akaniṣṭha world. These are called in Pāli uddhaṃsotas, "those whose stream goes upward". The duration of life in Avṛha is 1,000 kalpas (Vibhajyavāda tradition)। The height of this world is 10,485,760 yojanas above the Earth.

Bṛhatphala worlds

The mental state of the devas of the Bṛhatphala worlds corresponds to the fourth dhyāna, and is characterized by equanimity (upekṣā). The Bṛhatphala worlds form the upper limit to the destruction of the universe by wind at the end of a mahākalpa (see Temporal cosmology below), that is, they are spared such destruction.

• Asaññasatta (Sanskrit: Asaṃjñasattva) (Vibhajyavāda tradition only) – "Unconscious beings", devas who have attained a high dhyāna (similar to that of the Formless Realm), and, wishing to avoid the perils of perception, have achieved a state of non-perception in which they endure for a time. After a while, however, perception arises again and they fall into a lower state.

• Bṛhatphala or Vehapphala (Tib: 'bras.bu che) – Devas "having great fruit". Their lifespan is 500 mahākalpas. (Vibhajyavāda tradition). Some Anāgāmins are reborn here. The height of this world is 5,242,880 yojanas above the Earth.

• Puṇyaprasava (Sarvāstivāda tradition only; Tib: bsod.nams skyes) – The world of the devas who are the "offspring of merit". The height of this world is 2,621,440 yojanas above the Earth.

• Anabhraka (Sarvāstivāda tradition only; Tib: sprin.med) – The world of the "cloudless" devas। The height of this world is 1,310,720 yojanas above the Earth.

Śubhakṛtsna worlds

The mental state of the devas of the Śubhakṛtsna worlds corresponds to the third dhyāna, and is characterized by a quiet joy (sukha). These devas have bodies that radiate a steady light. The Śubhakṛtsna worlds form the upper limit to the destruction of the universe by water at the end of a mahākalpa (see Temporal cosmology below), that is, the flood of water does not rise high enough to reach them.

• Śubhakṛtsna or Subhakiṇṇa / Subhakiṇha (Tib: dge.rgyas) – The world of devas of "total beauty". Their lifespan is 64 mahākalpas (some sources: 4 mahākalpas) according to the Vibhajyavāda tradition. 64 mahākalpas is the interval between destructions of the universe by wind, including the Śubhakṛtsna worlds. The height of this world is 655,360 yojanas above the Earth.

• Apramāṇaśubha or Appamāṇasubha (Tib: tshad.med dge) – The world of devas of "limitless beauty". Their lifespan is 32 mahākalpas (Vibhajyavāda tradition). They possess "faith, virtue, learning, munificence and wisdom". The height of this world is 327,680 yojanas above the Earth.

• Parīttaśubha or Parittasubha (Tib: dge.chung) – The world of devas of "limited beauty". Their lifespan is 16 mahākalpas. The height of this world is 163,840 yojanas above the Earth.