“When something is understood differently from what it truly is, it is called Avidyā.
What is changing is taken to be non-changing. For example the mind.
What is subjected to decay is assumed to be pure. For example the body.
What is leading to suffering is taken to be the source of pleasure.
What is not conscious is assumed to be conscious.
All these errors in perceptions have many possibilities.
But the ultimate stage of Avidyā is to assume that we are the Masters, not Īśvara.”
– T Krishnamacharya’s commentary to Yoga Sūtra C2 v5