We are living in a world of increasing selfishness. People all over the world have become more and more self-centered, and people do bad thing, very often some unspeakably bad things. The sense of having a ‘self’ in them is the powerful force that drives them to seek their own personal interest in disregard foe moral ethics. In this book called “Tua Ku Khong Ku” which can be literally translated as ‘I’ and ‘mine’, Buddhadasa pointed out the need to abandon this sense of being ‘I’ and ‘mine’. It is the original source of selfishness. He also talked about of ‘sunnata’-‘voidness’ or ‘emptiness’. The realization of ‘sunnata’ is the highest level of Buddhist practice because in ‘sunnata’ no ‘I’ and no ‘mine’ exit. It is Nibbana.