BKS Iyengar writes
‘In order to understand this simplicity of the consciousness and purity of the Self, one needs a matured knowledge (paripakva jnana). We go to educational institutions to acquire knowledge. But to learn yoga, the institution is not outside. You have to step into your own university within the body, the mind and the intelligence. The body is an educational centre. The intelligence is its chancellor and volition is its vice-chancellor. Here the intelligence cannot work unless it is ignited by volition. Volition is will power. In yoga terminology, it is called iccha sakti or prerana sakti. Will power has the strength to take a decision. Intelligence without volition is impotent. Intelligence and will power, both being dynamic in their own ways, approach each other and get ignited and electrified. When the mind and intelligence come closer to each other, intelligence becomes meek, because the mind – being tricky – makes the intelligence oscillate. Yoga creates a state of equilibrium by training the mind and will power so that the will power is sharpened and the mind is tamed. Then the intelligence shines out with clarity and purity and steps out of the shadow of either the will or the mind’.
Iyengar BKS, Astadala Yogamala Volume 1 p.105 –107
The subject is in 5 parts and contains articles, videos and quotes. It is advisable to not rush through our subjects consuming the content quickly: apply a reflective mode where you might read an article prior to or immediately after practice. Where quotes are used they are often accompanied by an extract of the text. Look up other quotes used (as they often have the source and page noted) and read a fuller portion of the text. You might consider covering one part of the subject each week. T-Ph05 is a lifetime enrollment.