This dissertation takes the meaning of life as the foundation of inter-religious dialogue and deals with the problem of unequal power in dialogue. The meaning of life is an inescapable problem for human beings and religion. It is the relationship between Myth and human being, because meaning of life concerns about truth, ultimate concern, and religion. The meaning of life could be composed of individual and public dimension. People get individual meaning of life by authentic or inauthentic choices in their daily life. However, no human beings can live without society, so how to live with others in harmony via public consensus in the world we live in is the purpose of the meaning of life in public dimension. Cognition differs in human beings because of the difference in cultural background. However, mistake or misunderstanding may occur and alienate each other by looking at one single dimension. People who are alienated can only reach the communicative capability as a subject, the intersubjective understanding and the meaning of life through communicative action in public dimension. This dissertation takes Asissi and Museum of World Religions as the meaning of life as the foundation of inter-religious dialogue's examples. John Paul II and Master Hsin-Tao both discover the meaning of life in their religions, share it to others to enrich each other’s life and reach a consensus of the meaning of life in public dimension through inter-religious dialogue. Finally, this dissertation will explore the issues provoked from unequal power in inter-religious dialogue. It states the willingness to enter inter-religious dialogue is the core foundation. Oppression of religious power is not the ultimate solution for the seeking the meaning of life. Human beings should first seek meaning of life from their religions, share it to others and wait for others’ willingness into a dialogue.