If you have not yet read B.K.S. Iyengar’s Light on Life, you have a wonderful experience awaiting you. Mr. Iyengar’s book is subtitled “The Journey to Wholeness, Inner Peace and Ultimate Freedom”, and it’s written with the aid of a couple of heavyweight authors, John J. Evans and Douglas Abrams. They know how to take esoteric concepts and make them accessible and poetic.
What I like about the way this book is structured is that that each of the five chapters hangs on one of the koshas; there’s the physical body, the energetic, the mental, the intellectual and the divine. These “petals”, as Mr. Iyengar calls them, are what comprise a whole being when the koshas are balanced, and then this leads to ultimate freedom.
The sutra below refers to prajna – true wisdom – about which Mr. Iyengar says, “…with asana and pranayama practice, first we move outward from mind and cleanse the body, senses, and organs…. Gradually the higher intelligence of intuition begins to dawn, like light in the sky before sunrise.”
The eventual prize when intelligence is cultivated is wisdom. We “transform the dull, distracted, or oscillating mind into an attentive and restrained yogic mind.”

Rtambhara tatra prajna

When consciousness dwells in wisdom, a truth-bearing state of direct spiritual perception dawns.*
*Light on the Yoga Sutras of Patanjali, B.K.S. Iyengar