You must do the asana with your soul. How can you do an asana with your soul? We can only do it with the organ of the body that is closest to the soul - the heart. So a virtuous asana is done from the heart and not from the head. Then you are not just doing it, but you are in it. Many people try to think their way into an asana, but you must instead feel your way into it through love and devotion
B.K.S. IyengarTo do is hard, but to teach is still harder. Do not teach only to teach. Teach to improve the pupil. To be a teacher requires tremendous, vigorous discipline on oneself. We are teachers because somebody demands it from us. But the teacher should first rub his own self, and teach afterwards
B.K.S. IyengarOur greed comes from our fear that we will not have enough - whether it is money or love that we grasp. Yoga teaches us to let go of these fears and so to realize the abundance around us and within us.
B.K.S. IyengarThe cure to combat the three Ss- stress, strain, and speed- can be found in three Ws- the work of devoted practice, the wisdom that comes of understanding the self and the world, and worship because ultimately surrendering to what we cannot control allows the ego to relax and lose the anxiety of its own infinitesimally small self in the infinitude of the divine.
B.K.S. Iyengar