“The Nature of the three Guṇa are Gratifying, Painful and Depressing,
(they serve) Brightness, Endeavour and Restraint,
and are mutually Supressing, Supporting, Producing, Co-existing, Mobile.”
– Sāṃkhya Kārikā of Īśvara Kṛṣṇa Śloka Twelve

“These five Kleśa surround the heart of every individual.
They are related to the three Guṇa known as Sattva, Rajas and Tamas.
As long as one chooses not to inquire into the true nature of one’s self and acts mechanically,
they will unknowingly contribute to the dominance of the Kleśa.”
– T Krishnamacharya commentary on Yoga Sūtra Chapter Two verse 3

“Its the combination (of Guṇa) thats important.
There is the simile of the oil lamp in the Sāṃkhya Kārikā Śloka 13.
The cotton wick – Light Property (Sattva)
The basin or bowl – Heavy Property (Tamas)
The oil – Flows this way or that (Rajas)
The moment you dip the cotton in the oil it takes on that property.
Thus the Guṇa work together to produce the flame.”
– TKV Desikachar Madras November 24th 1979 on Sāṃkhya and Yoga

“Ones own actions can develop or make one Guṇa prominent.
Thus we can plan or practice Āsana or Prāṇāyāma to promote one Guṇa.”
– TKV Desikachar Madras November 24th 1979 on Sāṃkhya and Yoga

“Even Mantra are classified into Guṇa.
This needs to be considered when using Mantra for the individual.”
– TKV Desikachar Madras November 24th 1979 on Sāṃkhya and Yoga

“Everything we see,
including the instrument of Mind (Citta),
has three qualities or natures.
In Saṃskṛta they are known as Guṇa.”
– TKV Desikachar Madras December 1st 1979 on Sāṃkhya and Yoga

“All matter has the three qualities (Guṇa).
The effects can be based on what we see, eat, hear,
and the effects of what we see, eat, hear.”
– TKV Desikachar Madras December 1st 1979 on Sāṃkhya and Yoga

“The practice of Yoga can influence the Guṇa.
i.e. The room where you practice can affect the Guṇa by photographs, colour of paint, smell.”
– TKV Desikachar Madras December 1st 1979 on Sāṃkhya and Yoga

“Meditation (Dhyāna) can be related to the Guṇa.
The object of our inquiry must be related or,
in accordance with what we want to produce.”
– TKV Desikachar Madras December 1st 1979 on Sāṃkhya and Yoga

“In Yoga one who has mastered themselves is one who can produce whatever Guṇa is required.”
– TKV Desikachar December 1st 1979

“There is an impression in some schools that Tamas and Rajas (Guṇa) are to be rejected.
This is not so, both are necessary. It is the combination thats important.”
– TKV Desikachar December 1st 1979

“Lightness or Sattva is not always correct.
Sometimes it is necessary to create heaviness (Tamas)
and activity (Rajas) for memory, etc.”
– TKV Desikachar December 1st 1979

“In Sāṃkhya it is said that every problem comes from the Guṇa and their interplay.”
– TKV Desikachar Madras December 8th 1979 on Sāṃkhya and Yoga