Backbends are to be felt more than expressed. The other postures can be expressed and then felt. Like in meditation each person has to feel backbends.
B.K.S. IyengarWhen an asana is done correctly the body movements are smooth, there is lightness in the body and freedom in the mind.
B.K.S. IyengarThe primary aim of yoga is to restore the mind to simplicity, peace, and poise, to free it from confusion and distress.
B.K.S. IyengarI am old, and death inevitably approaches. But both birth and death are beyond the will of a human being. They are not my domain. I do not think about it. Yoga has taught me to think of only working to live a useful life...I will never stop learning, and it have tried to share some lessons with you. I do pray that my ending will be your beginning. The great rewards and the countless blessings of a life spent following the Inward Journey await you.
B.K.S. Iyengar