“Where does Śraddhā sit in a human being?
Is it a part of the mind?
No. It is beyond the mind.
It is Śraddhā which instructs the mind.
It comes from the hidden depths of the Saṃskāra and Vāsana
to influence one’s actions.”
– TKV Desikachar on Śraddhā in the Yoga Sūtra

“If Śarīra leads Ātma, there is Kleśa.
The cause of this is Karma Vāsana and Mithyā Indriya.”
– T Krishnamacharya commentary on Yoga Sūtra Chapter Two verse 2

“Vāsanā is an unconscious motivation directed towards
satisfying a physiological or psychological need.”
– Commentary on Yoga Sūtra Chapter Four verse 8

“Svabhava is Karma Vāsana.”
– T Krishnamacharya commentary on Bhagavad Gītā Chapter Five verse 14

“Everything we do has an origin.”
– TKV Desikachar 1995‎

“Nothing destroys Vāsanā, only they become ineffective.”
– TKV Desikachar January 11th 1995

“But Saṃskāra can be fed by Vāsanā.”
– TKV Desikachar January 12th 1995