Aggregates, Emptiness and Buddha-nature

Understanding a person without a permanent soul

Buddhist teachings about human life challenge the idea that there is an unchanging ‘me’ behind everything a person experiences. The teaching of anatta, or no permanent self, does not deny that people have bodies, personalities or experiences. It questions whether any of these is a fixed soul that remains unchanged.

The Five Khandas, also called aggregates or skandhas, explain human existence through five interacting aspects. Theravada Buddhism particularly emphasises this analysis. Mahayana Buddhism also accepts the aggregates, while emphasising their emptiness and the potential for enlightenment known as Buddha-nature.

The five aggregates working together

An aggregate is a ‘heap’ or grouping of experiences, rather than a separate piece of a soul. The five aggregates are:

These are not five independent people inside one body. They interact in an ordinary experience: a person sees something, recognises it, experiences a feeling and responds to it. Together, the aggregates help explain what we call a person’s identity and personality.

For Theravada Buddhists, examining these changing experiences can help develop wisdom. Bodies age, feelings pass and intentions change. Identifying any one of these as a permanent ‘self’ means trying to hold on to something that does not stay the same.

What the Khandha Sutta teaches

In the Khandha Sutta, the Buddha addresses monks at Savatthi and announces that he will teach ‘the five aggregates & the five clinging-aggregates’.

He identifies form, feeling, perception, mental fabrications and consciousness. ‘Mental fabrications’ is another translation of mental formations. Each category includes what is past, present or future; internal or external; far or near. The teaching therefore concerns whole categories of experience, not just what someone happens to feel at one moment.

The Buddha then describes the same five categories as clinging-aggregates when they are available for attachment and associated with mental defilements. The important distinction is not that a person gains five extra parts. It is the relationship to the aggregates: they become things to cling to.

For example, someone might become attached to their appearance as the basis of who they are. When their body changes, that attachment can bring distress. Recognising form as a changing aggregate helps challenge the demand that it must remain unchanged. This connects the teaching to reducing attachment and suffering, rather than merely memorising a list.

Sunnata: empty of independent existence

Sunnata, often written sunyata, means ‘emptiness’. In Mahayana Buddhism, it means that things have no independent, permanent essence. The aggregates themselves are empty in this sense: none exists as a fixed self, separate from the conditions on which it depends.

Emptiness does not mean that nothing exists or that life is meaningless. A laptop can exist and work, but it depends on components such as its keyboard, graphics card and storage drive. There is no additional, independent ‘laptop essence’ apart from the parts and conditions that make it function. It is also impermanent: damage to an essential component can stop it working.

This analogy helps explain why something can be real in everyday life without possessing an unchanging, independent nature. Mahayana applies this understanding beyond human personality to all things.

Realising this can influence behaviour. If possessions and identities are not fixed, there is less reason to cling to them as though they could provide permanent security. Recognising dependence on others can also encourage compassion and selflessness. Sunnata therefore connects an understanding of reality with a way of living that reduces suffering.

Tathagatagarbha: the potential for enlightenment

Tathagatagarbha, or Buddha-nature, is an important Mahayana teaching that all beings have the potential to achieve enlightenment. It is sometimes described as a seed of Buddhahood within them.

Ignorance, distractions and attachments can hide this potential. Following and understanding the Buddha’s Dhamma helps uncover it. The point is not that everyone is already enlightened, but that their present confusion does not make enlightenment impossible.

This belief can give practitioners confidence that spiritual development is possible. It also supports compassion: others should not be dismissed as incapable of enlightenment. Buddha-nature should not be confused with a permanent personal soul; it expresses the possibility of awakening.

Different emphases, connected purposes

Theravada places particular emphasis on understanding the aggregates and overcoming identification with them. Mahayana emphasises that the aggregates, like all things, are empty of independent existence, alongside the teaching of Buddha-nature.

Their importance can be compared through what they help Buddhists do. The aggregates provide a concrete way to examine experience; sunnata develops insight into dependence and challenges attachment; Buddha-nature encourages confidence and respect for others’ potential.

A Buddhist might regard insight into the aggregates as especially important because it directly challenges clinging to ‘me’ and ‘mine’. Another might stress Buddha-nature because confidence in the possibility of enlightenment motivates practice. A justified conclusion can recognise that these teachings serve complementary purposes: understanding why attachment is mistaken and recognising that liberation is possible.