> For the complete documentation index, see [llms.txt](https://knowledge.theholisticcare.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.theholisticcare.com/knowledge/glossary-and-key-concepts/nonduality-and-advaita-terms.md).

# Nonduality & Advaita Terms

Key concepts used in THC's awareness and self-inquiry material, including nonduality, Advaita, Atman, Brahman, and moksha.

THC's deeper contemplative material draws partly from Advaita Vedanta and related nondual traditions.

## Nonduality

Nonduality points to the recognition that subject and object, observer and observed, or self and world are not ultimately separate in the way ordinary conceptual thinking suggests.

## Advaita Vedanta

A major school of Indian philosophy. **Advaita** means “not two.”

## Atman

In Vedantic philosophy, Atman refers to the deepest Self, beyond the changing personality and mental content.

## Brahman

The ultimate reality described in the Upanishadic and Vedantic traditions.

## Atma Vichara

Self-inquiry: direct investigation into the nature of the self or the sense of “I.”

## Moksha

Liberation or freedom from ignorance of one's true nature in Indian philosophical traditions.

## Witness / observer

A practical term used in meditation to describe the capacity to notice thoughts, sensations, and emotions.

THC uses these concepts as invitations to inquiry rather than as beliefs that every learner must adopt.

[Explore THC's live glossary](https://www.theholisticcare.com/glossary)

## Related guidance

* [Glossary & Key Concepts](https://knowledge.theholisticcare.com/knowledge/glossary-and-key-concepts)
* [Mindfulness & Meditation Terms](https://knowledge.theholisticcare.com/knowledge/glossary-and-key-concepts/mindfulness-and-meditation-terms)
* [Yoga & Pranayama Terms](https://knowledge.theholisticcare.com/knowledge/glossary-and-key-concepts/yoga-and-pranayama-terms)


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