In just 100 short, pithy aphorisms, this classic of Indian philosophy spells out succinctly what happens to the mind during meditation and how to use the mind to attain liberation. Today's Hatha Yoga-mostly sequences of poses-bears little resemblance to what Patanjali's 3rd-century contemporaries practiced as Yoga. Hartranft's fresh translation and commentary rescues the text from identification with hatha yoga and makes it beautifully accessible to people following any meditation path.