Synopsis Philosophy of Universal Flux in Theravada Buddhism is a new subject in the field of Buddhist Studies and much has not been written on it. It is a study of flux from the materials in the Pali Nikayas. This book discusses analytically the Buddhist concepts of Citta, Cetasika, Rupa, Paticcsamup-pada, Soul Theory of Vatsiputriyas ad Theory of Momentariness. The author has discussed these concepts from a new point of view. The author has not only used exhaustively all the literary and epigraphic sources available on the subject but has also analysed them in a scholarly manner.