Ajahn Buddhadāsa worked painstakingly to establish and explain the correct and essential principles of what he called “pristine Buddhism” or “the heart of Buddha-Dhamma,” that is, the original awakening realizations of Lord Buddha before it was buried under commentaries, ritualism, clerical politics, and the like. His work was based in extensive research of the Pāli texts (Canon and commentary), especially of Buddha's discourses (suttas), followed by personal experiment and practice with these teachings. He then taught whatever he could say truly quenches dukkha (dissatisfaction, distress, suffering). His goal was to produce a complete set of references for present and future research and practice. His approach was always scientific, straight-forward, and practical.