Buddhist theory of Dependent Origination (Paticcasamuppāda or Pratītyasamutpāda) is one of the theories with regard to origination of phenomena. This is called the Theory of Causality in Buddhism. Some scholars named it the Chain of Causation. According to early Buddhist and later Buddhist schools, Dependent Origination is called the Middle Way (Majjhimāpaţipadā). Especially Nagarjuna founded his Central philosophy on the teaching of Dependent Origination. Main characteristic of the teaching of Dependent Origination is that it does not fall into any extreme. Buddha emphatically said that it is the truth of the world. And also he mentioned that whether the Buddhas are born or not this truth is always present in the world (Uppādā vā tathāgatānam anuppādā vā tathāgatānamţhitā vā sā dhātu dhammaţţhitatā dhammaniyāmatā idappacayatā paţiccasamuppādo).