There is talk of 3 goals in Yoga! - An outer goal welfare: bahya-lakshya - Mastery of the mind: Madhya lakshya - The internal Yoga: Antar-lakshya If you are looking how to take a stance, how to hold and back, you have a very good book plus the good name and some beautiful stories, but if you want to understand the Yoga go your way Not a single line on an energy vision on the energy centers in posture, pranayama and approach that remains "lung" ... Why give importance to the difficulty of hanging a posture would have an interest to make a link between the individual soul and universal soul, yet all its postures Iyengar notes in his book with a number, next to the title, which corresponds to the difficulty of taking the posture, it actually denotes a very special orientation of its own ... So Iyengar was in bahya-lakshya, but, but ... But was it really? It would be if in his step as he could speak and testify Antar-lakshya, this Yoga-oriented union of the individual soul with the universal soul, the real purpose of Yoga. Above all along his books, one almost never finds this idea or in practice exposed in this book. How also do not meet the proud title: Yoga Dipika (Light On Yoga) in connection with another sublime book that is called "Yoga Pradipika" (small light on Yoga) where postures hold only 25 pages out of 400 and where there is a real depth to Yoga ... So the see through Yoga only an external form of the posture by not watching ONLY if a finger breathes in the hand and arm, not do yoga, no! It's a shame to stop there and do all this for just that ... Hatha Yoga refers to the union of sun and moon, where the moon is, where is the sun? What will happen when the moon and sun merge, to what should we move when we practice? All that remains unanswered ...