Cattari Ariyasaccani Four Laws Governing the Behaviour of All Beings Dhamma of Lord Buddha. D. C. Wijeratna BScEng, MEng 1. Introduction Cattari Ariysaccani is the written form in English of cattāri ariyasaccāni, a word that occurs in the Theravada canon. The expression 'four noble truths' or Four Noble Truths of Buddhism is used to denote Cattari Ariyasaccani in English. Oxford Dictionaries defines 'four noble truths' as: The four central beliefs containing the essence of Buddhist teaching; Buddhist teaching means the teachings of Buddhism as given in canonical texts of major Buddhist traditions. In the Theravada canon, the sayings attributed to buddho bhagavā is named bhagavatā dhammo; In the texts, buddho bhagavā is quite often shortened to bhagavā; and bhagavatā dhammo to dhammo. English equivalents for bhagavā and dhammo are Lord and Dhamma, respectively. With these definitions, the expression bhagavatā dhammo means Dhamma of the Lord. Thus Cattari Ariyasaccani is a Dhamma term. Cattari Ariysaccani was formulated and presented to the world by Lord Buddha. This paper begins an investigation to find the meaning of Cattari Ariyasaccani (cattāri ariyasaccāni) in Dhamma. 2. First Dhamma Desana of the Lord