Bhagavad Gita: The Song of God, translated by Swami Prabhavananda and Christopher IsherwoodRead about the other books on the list.
If you only ever read one book about yogic philosophy, this should be it. This book is part of the triumvirate of Hindu religious texts, and includes some of the most profound wisdom ever scribed by human hands. “The Gita,” as the cool kids call it, is written in the style of an epic poem. It’s essentially a long conversation between the deity Krishna and his pupil Arjuna. The two contemplate the most baffling of ethical dilemmas, from war to lust to laziness. This trove of teachings will help you to see modern yoga in its true spiritual, cultural, and historical context. There are countless translations available, but this one is a personal favorite and gets even better when you read it at the beach.
--Marshal Zeringue