The practice of asanas purges the body of its impurities, bringing strength, firmness, calm, and clarity of mind.
B.K.S. IyengarYes, flexibility of body and physical perfection for Yogasana is important. However more important is the state of your mind, Meditative mind. Your flexibility might be excellent but if your mind is not attentive, you are merely doing some physical exercise, not Yoga.
B.K.S. IyengarPersistent practice alone is the key to yoga. As you take pains to learn, continue with devotion what you have learn.
B.K.S. IyengarDo not allow past experiences to be imprinted on your mind. Perform asana each time with a fresh mind and with a fresh approach.
B.K.S. Iyengar