The mind is responsible for the feelings of pleasure and pain. Control of the mind is the highest Yoga.
Pain, sorrow, ignorance are all illusory; they cannot live. Bliss, joy, knowledge are true; they cannot die.
Be humble as the blade of grass that is being trodden underneath the feet. The little ant tastes joyously the sweetness of honey and sugar. The mighty elephant trembles in pain under the agony of sharp goad
Meditation is painful in the beginning but it bestows immortal Bliss and supreme joy in the end.