Heyam Duhkam Anagatam - Patanjali Yoga Sutras II.16 "The pains which are yet to come, can and have to be avoided."

Sthira Sukham Asanam - Patanjali Yoga Sutras II.46 "Asana is perfect firmness of the body, steadiness of intelligence and benevolence of spirit."

"Your body exists in the past and your mind exists in the future. In yoga they come together in the present." - BKS Iyengar

"Spirituality is not some external goal..... but part of the divine core of each of us, which we must reveal. For the yogi, spirit is not separate from body." - BKS Iyengar.

"Yoga means union. The union of the individual soul with the Universal Spirit is yoga. But this is too abstract a notion to be easily understood, so for our level of understanding I say that yoga is the union of body with the mind and of mind with the soul." - BKS Iyengar