A scientist sets out to conquer nature through knowledge - external nature, external knowledge. By these means he may split the atom and achieve external power. A yogi sets out to explore his own internal nature, to penetrate the atom (atma) of being. He does not gain dominion over wide lands and restless seas, but over his own recalcitrant flesh and febrile mind.
B.K.S. IyengarIf you practice yoga every day with perseverance, you will be able to face the turmoil of life with steadiness and maturity.
B.K.S. IyengarIf you open the armpits, the brain becomes light. You cannot brood or become depressed.
B.K.S. IyengarA lamp does not flicker in a place where no wind blows; so it is with a yogi, who controls his mind, intellect and self, being absorbed in the spirit within him.
B.K.S. IyengarYoga, an ancient but perfect science, deals with the evolution of humanity. This evolution includes all aspects of one's being, from bodily health to self realization. Yoga means union - the union of body with consciousness and consciousness with the soul. Yoga cultivates the ways of maintaining a balanced attitude in day to day life and endows skill in the performance of one's actions.
B.K.S. Iyengar