This book is an introduction to the attainment of mindfulness through bare attention to, and clear comprehension of, the whole process of breathing. Using the breath as his primary focus of attention, the meditator applies participatory observation to the entirety of his own perceptual universe. He learns to watch changes occurring in all physical experiences, in feelings and in perceptions. He learns to study his own mental activities and the fluctuations in the character of consciousness itself. All of these changes are occurring perpetually and are present in every moment of our experience.
Meditation is a living activity, an inherently experiential activity.
It cannot be taught as a purely scholastic subject. The living heart of the process must come from the teacher's own personal experience. Nevertheless, there is a vast fund of codified material on the subject which is the product of some of the most intelligent and deeply illumined human beings ever to walk the earth. This literature is worthy of attention. Most of the points given in this book are drawn from the Tipitaka, which is the three-section collected work in which the Buddha's original teachings have been preserved.