Buddhi: Meaning, the Intellect in Yoga Philosophy and Buddhi Yoga

Buddhi (Sanskrit: बुद्धि) is the part of the mind that knows, judges and decides. It is usually translated as "intellect", but "discernment" is closer: in yoga philosophy buddhi is the faculty that looks at what the senses and thoughts bring in and settles what it is and what to do about it. The word comes from the root budh, to wake up or to know, the same root as Buddha.

What does buddhi mean?

Buddhi is built from the verb root budh (to awaken, to perceive, to understand) and the suffix -ti, which turns a verb into a noun. The dh and the t merge by a Sanskrit sound rule, so budh + ti becomes buddhi: "the act of understanding", or the faculty that understands.

The same root gives several words you meet in yoga and in Buddhism:

• Buddha: "awakened", the one who has woken up. Our note on what Buddha means in yoga covers the word.
• Bodhi: awakening, enlightenment. The Bodhi tree is the tree the Buddha sat under.
• Buddhi: the faculty of knowing and deciding.

Say it with two syllables, BUDD-hee. The dh is a breathy d, with a small puff of air after it.

Buddhi meaning in Hindi

In Hindi, बुद्धि (buddhi) is an everyday word for intelligence, good sense or wit. Someone clever is buddhiman. Someone foolish may be called buddhu. When people say man-buddhi, they mean mind and intellect together: man (from Sanskrit manas) is the mind that feels and wants, buddhi is the part that judges. The Hindi word is broader and more ordinary than the philosophical term, the way "intelligence" is in English.

In Hindu stories, Buddhi is also a name. In some traditions she is one of the wives of Ganesha, alongside Siddhi or Riddhi, and stands for wisdom.

Buddhi and the other parts of the mind

Yoga philosophy does not treat the mind as one thing. It splits it into functions, and buddhi only makes sense next to the others. In Vedanta the whole inner instrument is called antahkarana, and it has four parts:

• Manas: the sensing, restless mind. It takes in what the senses report and weighs "this or that" without settling.
• Buddhi: the deciding mind. It says "this is a rope, not a snake" and "I will do this".
• Chitta: the store of memory and impressions.
• Ahamkara: the "I-maker", the sense that all of this is happening to me.

A plain example. You hear a sound in the dark. Manas registers it and wavers. Chitta offers a memory of the neighbour's cat. Ahamkara makes it personal: something is outside my door. Buddhi decides: it is the cat, go back to sleep.

Behind all four, in this model, stands the Atman, the true self, which is aware but does not think. Buddhi is the closest instrument to it and the clearest one, which is why the texts rank it above the mind and the senses.

Buddhi in the classical texts

Samkhya. The Samkhya school, the oldest systematic model behind classical yoga, names buddhi as the first thing that arises from matter (prakriti). It is also called mahat, "the great one". From buddhi comes ahamkara, and from ahamkara come manas, the senses and the elements. The Samkhya Karika (verse 23) defines buddhi as adhyavasaya: determination, making up one's mind. The important point in Samkhya is that buddhi is still matter. It is the finest part of the material world, clear enough to reflect pure consciousness (purusha), but it is not consciousness itself.

The Katha Upanishad gives the best-known picture. The self rides in a chariot, which is the body. Buddhi is the charioteer, the mind is the reins, and the senses are the horses. When the charioteer is steady, the horses stay on the road. The same text ranks them: beyond the senses is the mind, beyond the mind is buddhi, and beyond buddhi is the self.

The Bhagavad Gita uses the word often, and it introduces buddhi yoga (2.39 and 2.49): acting with a steady, clear understanding and without clinging to the result. Chapter 18 describes three kinds of buddhi. A clear buddhi knows when to act and when to hold back. A restless one confuses right and wrong. A dull one sees everything upside down.

The Yoga Sutras. Patanjali mostly uses a different word, chitta, for the whole mind-field, and buddhi appears only in passing (sutra 4.21). His goal, viveka-khyati or discriminating insight (2.26), is the work Samkhya gives to buddhi: seeing the difference between the seer and what is seen. If you want to read the Sutras in context, start with what a sutra is and the 8 limbs of yoga.

Ayurveda uses buddhi for the faculty of judgement as well. The Charaka Samhita names a failure of it, prajnaparadha, often translated "a mistake of the intellect": doing what you know is bad for you.

How buddhi shows up in practice

You do not train buddhi with a special pose. The tradition works on it indirectly, by quieting what clouds it.

• Meditation. Sitting still and watching thoughts come and go shows you the difference between the thought and the part of you that notices it. That gap is where discernment has room to work. The guided class Make Friends With Your Mind is 15 minutes of noticing thoughts and coming back.
• Concentration. Keeping attention on one point, the breath or a spot in front of you, steadies manas so that buddhi is not pulled in ten directions. Meditation for a Restless Mind uses a concentration exercise for this.
• Self-study. Svadhyaya, one of the five niyamas, means reading the texts and watching your own reactions. Asking "why did I choose that?" is buddhi turned on itself.
• On the mat. The moment in a hard pose where you decide to back off instead of pushing into pain is a small act of buddhi. Manas wants the shape. Buddhi reads the knee.

Our beginner's guide to meditation covers how to start sitting if you have never tried.

Where the sources disagree

Is buddhi the higher self? Many modern books and studios call buddhi "the inner wisdom" or "the higher self". In Samkhya and in the Yoga Sutras that is a mistake. Buddhi is the clearest part of the mind, but it is still mind, still matter, and it can be wrong. The self (purusha or Atman) only witnesses. Vedanta says much the same: buddhi reflects the self like a clean mirror reflects the sun, and the mirror is not the sun.

Intellect or discernment? "Intellect" is the standard English translation, and it can mislead. Buddhi in the texts is less about being clever or good at analysis and more about the capacity to decide rightly: to see what something is and choose accordingly. A person with a quick mind and poor judgement has plenty of manas and a clouded buddhi.

What is buddhi yoga? In the Gita it means acting from clear understanding without clinging to results. Commentators read it differently. Shankara, in the Advaita Vedanta line, ties it to knowledge. Devotional commentators point to Gita 10.10, where Krishna says he gives buddhi yoga to those who worship him with love, and read it as understanding that grows from devotion. Modern teachers sometimes present "Buddhi Yoga" as a separate style or path of its own. The classical texts treat it as an attitude inside action, not a separate school.

Where does chitta end? Vedanta lists chitta as one of four parts. Patanjali uses chitta for the whole mind, and his commentator Vyasa folds buddhi into it. Same words, different maps. When you read a text, check which map it uses.

For more of the vocabulary, see 50 Sanskrit yoga terms.

To read the source that frames all of this, the introduction to the Yoga Sutras of Patanjali goes through the text sutra by sutra, and our yoga philosophy classes collect the rest.

Frequently asked questions

What does buddhi mean?

Buddhi is Sanskrit for the faculty of knowing and deciding, usually translated as intellect or discernment. It comes from the root budh, to awaken or to know. In yoga philosophy it is the part of the mind that judges what the senses and thoughts bring in.

What is the meaning of man buddhi?

Man-buddhi means mind and intellect together. Man (Sanskrit manas) is the sensing, wanting mind that wavers between options. Buddhi is the part that decides. In Hindi the pair is used for a person's whole thinking and feeling self.

What does buddhi mean in Hindi?

In Hindi, बुद्धि means intelligence, wisdom or good sense. A clever person is buddhiman. The word is used in everyday speech, while the philosophical meaning, the deciding part of the mind, comes from Sanskrit texts.

What is buddhi in Ayurveda?

In Ayurveda, buddhi is the faculty of judgement. The Charaka Samhita describes prajnaparadha, a failure of that judgement, as one cause of ill health: knowing what is good for you and doing the opposite.

What is the difference between buddhi and manas?

Manas takes in what the senses report and weighs options without settling. Buddhi settles: it recognises what something is and decides what to do. In the Katha Upanishad's image, manas is the reins and buddhi is the charioteer holding them.

Is buddhi the same as Buddha?

No, but they share a root. Both come from budh, to wake up or to know. Buddha means "the awakened one". Buddhi is the faculty of understanding that everyone has.

What is buddhi yoga?

Buddhi yoga is a term from the Bhagavad Gita (2.39, 2.49 and 10.10). It means acting from clear, steady understanding without clinging to the result. Commentators disagree on whether it rests mainly on knowledge or on devotion.