Despite the development of science and mass media, the reality of the world remains for most of us unintelligible and meaningless, even hostile. A random conglomeration of countless unrelated things and events, reflecting the inner confusion of man. However, there is an element in all of this that could give meaning and order to our world, and that is vibration and musical sound. Because the Creative Word, through vibrations and energy waves, is what created all things and sustains them in a unified whole that tends toward some ultimate harmony. And what exists outside of us, also exists within us. It is precisely this secret and imperceptible factor, the vibration, that Inayat Khan reveals in this book and shows us how through it we can transform ourselves.