Hatha Yoga teaches us to use the body as the bow, asana as the arrow, and the soul the target.
B.K.S. IyengarYoga has to be done with the intellect of the head as well as the intellect of the heart
B.K.S. IyengarThe sleeping tortoise takes all its limbs into its carapace. So does the yogi: going back into himself he does not see anything worldly any longer, he makes peace in himself.
B.K.S. IyengarAbhyasa (practice) is a dedicated, unswerving, constant, and vigilant search into a chosen subject pursued against all odds in the face of repeated failures, for indefinitely long periods of time.
B.K.S. Iyengar