Kaṇāda (Kanada) is the traditional author of the Vaiśeṣika Sūtra, the founding text of the Vaiśeṣika school of Indian philosophy. Almost nothing is known of his life. His name, like Kaṇabhuj and Kaṇabhakṣa, means ‘grain-eater’ in the tradition’s own explanation, and he is also called Ulūka, ‘owl’. The text classifies reality into six categories and explains the material world by atoms.

What are Kaṇāda's six categories?

They are substance (dravya), quality (guṇa), action (karma), generality (sāmānya), particularity (viśeṣa) and inherence (samavāya). Padārtha means ‘the meaning of a word’, and the school holds that these cover whatever can be named and known. Later Vaiśeṣika writers added absence (abhāva) as a seventh.

Was Kaṇāda the first atomist?

He may have been among the first. The Stanford Encyclopedia says that the first theories we can call atomist may have been developed in classical Indian philosophy, and that Vaiśeṣika atomism likely has origins several centuries before the common era. Claims that Indian atomism was shaped by Greek influence are uncommon in recent scholarship. His atoms also differ from those of Democritus, since atoms of different elements have different perceptible qualities.

When did Kaṇāda live?

Nobody knows. The Vaiśeṣika Sūtra is dated anywhere from the 6th century BCE to the 1st or 2nd century CE, and the Stanford Encyclopedia gives about the 1st century CE. The text seems to have been fixed over time, and what is told of the author himself is legend.

Kaṇāda: atoms, the six categories and the Vaiśeṣika Sūtra

Key ideas

Six categories. Whatever can be named and known falls under six padārthas, ‘meanings of words’: substance, quality, action, generality, particularity and inherence. The sūtras say that knowledge of their likenesses and differences leads to the highest good, and later Vaiśeṣika writers added a seventh, absence.
Nine substances. The substances are earth, water, fire, air, space, time, direction, soul and mind. The first four are the elements, made of atoms; the soul and the mind are distinct from material elements.
Eternal atoms. Composite things are made of eternal, partless atoms (paramāṇu), with a kind of atom for each of the four elements. A classic argument in the tradition is that a body cannot be divisible without end, since then a mountain and a mustard seed would be equal in size.
Particularity and inherence. Particularity (viśeṣa) is what makes one eternal substance, such as one atom, differ from another of its kind, and it gives the school its name. Inherence (samavāya) is the relation by which a quality, an action or a universal belongs to what it characterises: the brown colour of a cow inheres in the cow.
An unseen cause. Some events are not explained by anything observed, such as iron moving towards a magnet, the upward flame of fire and the first movements of atoms. The sūtras ascribe them to an unseen cause (adṛṣṭa) tied to dharma, so that the study of nature runs into ethics and release.
Two means of knowledge. The school counts perception and inference as the only means of knowledge, and treats testimony as a kind of inference. The soul is inferred from signs such as breathing, cognition, pleasure, pain and effort.

Kaṇāda (Kanada) is the traditional author of the Vaiśeṣika Sūtra, the founding text of Vaiśeṣika, the Indian school that sorts reality into six categories and explains the material world as made of eternal atoms. The Stanford Encyclopedia says that the first theories we can call atomist may have arisen in classical Indian philosophy, and it names Vaiśeṣika and Nyāya as the two systems resting on the Vedas that favoured atomist accounts of matter.

Who was Kaṇāda, and when did he live?

Almost nothing is known of him. In the tradition’s own explanation his name means “grain-eater”: the commentator Śrīdhara says that he lived like a pigeon, gathering grains. It is often rendered “atom-eater”, because kaṇa also means a particle. He is also called Kaṇabhuj and Kaṇabhakṣa, and Ulūka, “owl”, hence the school’s other name, Aulūkya. The Vāyu Purāṇa, as Dasgupta reports it, makes him a native of Prabhāsa near Dvārakā and a pupil of Somaśarman. That is legend.

The dates are disputed. Because the sūtras do not mention Buddhism, some scholars date them to the sixth century BCE; the Stanford Encyclopedia gives about the first century CE. The text seems to have taken its present form over time, perhaps between 200 BCE and the start of the common era, with older doctrines inside it.

What are the six categories?

The sūtras open, in Cowell and Gough’s translation of Mādhava’s summary, with the words “Now, therefore, we shall explain duty”, and go on to say that the highest good comes from knowing the six padārthas: substance, quality, action, generality, particularity and inherence. Substance is nine-fold: earth, water, fire, air, space, time, direction, soul and mind. Generality is what makes many things of one kind, as universals do. Particularity (viśeṣa) differentiates the ultimate things, such as individual atoms, and gives the school its name.

Inherence is the least familiar. The brown colour of a cow inheres in the cow, and the Vaiśeṣikas made that relation a category in its own right; the same relation joins a whole to its parts.

What did he say about atoms?

The Stanford Encyclopedia’s account of Nyāya-Vaiśeṣika atomism is a good short guide. Atoms (paramāṇu) are eternal and partless, with one kind for each of earth, water, air and fire. Unlike those of Democritus, they have perceptible qualities, such as cold for water atoms. They combine into pairs and triples before forming bodies large enough to see. A classic argument runs that bodies cannot be divisible without end, for then a mountain and a mustard seed would be the same size.

The atoms themselves are never seen, so the theory rests on inference, a point critics pressed. Democritus is the obvious comparison. The Stanford Encyclopedia says that claims of Greek influence on Indian atomism are uncommon in recent scholarship, and that Jain tradition’s claim to have inspired Vaiśeṣika atomism is thought by recent scholars to run the other way.

Where do nature and ethics meet?

The sūtras begin with dharma. On Dasgupta’s reading, they explain the movement of iron towards a magnet, the rising of flame and the first motion of atoms by an unseen cause, adṛṣṭa, which is tied to dharma. Dasgupta argued that the sūtras nowhere mention a creator God and that the doctrine of creation and dissolution first appears in Praśastapāda. The soul (ātman) is inferred from breathing, cognition, pleasure, pain and effort, and liberation is tied to knowledge of the categories.

What was his influence?

Vaiśeṣika took only perception and inference as means of knowledge and treated testimony as inference, a point on which it differed from Nyāya, whose sūtras are the work of Akṣapāda Gautama. The two schools came to be studied together, and the later Navya-Nyāya largely merged them. Buddhists developed a rival atomism of momentary events, not of substances, and Vasubandhu later criticised atomism in his Twenty Verses.

How should you start reading Kaṇāda?

Read the Stanford Encyclopedia’s account of Nyāya-Vaiśeṣika atomism, then Book I of the sūtras in Nandalal Sinha’s translation. The chapter on the Vaiśeṣika or Aulūkya system in Mādhava’s Sarva-darśana-saṃgraha is a free medieval summary.

Kaṇāda