Pranayama teaches the aspirant to regulate his breathing and thereby control the mind.
B.K.S. IyengarYoga takes us to an unconditioned freedom, because yoga sees even good habits as a form of conditioning or limitation.
B.K.S. IyengarYour whole being should be symmetrical. Yoga is symmetry. That is why yoga is a basic art.
B.K.S. IyengarFocus on keeping your spine straight. It is the job of the spine to keep the brain alert.
B.K.S. IyengarI also say with backbends, you have to be cautiously bold. Not carelessly bold. You have to descend to the dictation of the spine. You cannot command from the brain to do the poses. As you play with a child, guarding the child from injuries, similarly you have to play in backbends, guarding your spine.
B.K.S. IyengarHe who has learnt to control his tongue has attained self-control in a great measure. When such a person speaks he will be heard with respect and attention. His words will be remembered, for they will be good and true. When one who is established in truth prays with a pure heart, then things he really needs come to him when they are really needed: he does not have to run after them. The man firmly established in truth gets the fruit of his actions without apparently doing anything. God, the source of all truth, supplies his needs and looks after his welfare.
B.K.S. Iyengar