"An Introduction to Yoga" by Annie Besant is a book published in 1908. Based on four lectures delivered at the Theosophical Society's anniversary in India, this work aims to introduce Western audiences to yoga's philosophy and practice. Besant explores yoga as both spiritual path and systematic science, examining different Hindu schools of thought, states of consciousness, and practical methods for integrating yoga into daily life. The lectures blend traditional Indian wisdom with Theosophical perspectives, addressing topics from enlightenment to managing pain and pleasure. (This is an automatically generated summary.)