Sometimes our body is willing, but our mind is weak. Sometimes our mind is willing, but our body is weak. Do not be afraid. Strive to extend your capacity but do not be disappointed with yourself. What does not challenge us, cannot change us.

There is only one reality, but there are many ways that reality can be interpreted.

Willpower is concrete, not ethereal. When you do something, you demonstrate your willpower, and it becomes all the easier to have the same power of will the next time.

Asana is perfect firmness of body, steadiness of intelligence, and benevolence of spirit.

As long as the body is not in perfect health, you think about it, and that prevents you from thinking of the mind. The sound mind is a sound body.

Nothing can be forced, receptivity is everything.

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.