The essential introductory text to the teachings of Hazrat Inayat Khan, newly revised for a contemporary audience. This first volume of the Sufi Message of Hazrat Inayat Khan, Centennial Edition Series, comprises four books on the theme of the inner life and is considered an essential introduction to the teachings of Hazrat Inayat Khan. This material is newly presented in a form that balances fidelity to his original words with sensitivity to the contemporary evolution of the English language. The following works, along with an Introduction by Pir Zia Inayat Khan, are included: The Way of Illumination; The Inner Life; The Soul, Whence and Whither; The Purpose of Life.