Yoga means union of the individual mind with universal mind, so meditation is considered the essence of yoga. The transformation of the mind and body during meditation is significantly more profound than simply resting with your eyes closed.
Deepak ChopraKarma, memory, and desire are just the software of the soul. It's conditioning that the soul undergoes in order to create experience. And it's a cycle. In most people, the cycle is a conditioned response. They do the same things over and over again.
Deepak ChopraYour body, which is very physical, is under the influence of your thoughts, your feelings, your emotions, your dreams, your fantasies, your desires, your instincts, your drives, your imagination. All these things orchestrate themselves - all these internal activities that are in the invisible domain that we call consciousness actually have very precise physical effects both in our biology, but they also influence our perception of the world.
Deepak Chopra