Amazon.com description: Product Description: This valuable book provides a complete manual for the study and practice of Raja Yoga, the path of meditation and mental focus. This original interpretation of these timeless teachings is a treasure to be read and referred to again and again, by seekers treading the spiritual path. These classic Sutras were written by the sage Patanjali between first and third centuries CE, and clearly mark out the path to Self-Realization through the means of right living, meditation and fostering mental focus and concentration.