Buddhadasa Bhikku (1906-1993) is one of the most important Buddhist teachers of the twentieth century. As the meditation master of Suan Mokkh Meditation Center in Chaiya, southern Thailand, he propagated Buddhist philosophy and meditation practice among tens of thousands of western visitors from North America, Europe and Australia. When he passed away in 1993, he left behind a massive body of literary works in Thai language, explaining how traditional Buddhist teachings are relevant to the modern world. He inspired generations of teachers, intellectuals, and activists who have spread out across the world, to translate his teachings into practice. He is one of the founders of modern socially engaged Buddhism, and was a key person in the reformation of 20th century Thai Buddhism.