In Culamalunkya Sutra,Buddha deals metaphysical questions with an attitude of empiricism and pragmatism .He gives noanswer to such questions as whether theworldis eternal or not,whether the body is identical with the soul,if Tathagata exists after death,etc . This approach could be applied to religious dialogue . Concerning metaphysical questions,our reason cannot draw an ultimate result . The most reasonable way is to discard our exploration and practically turn to our experiences . In the intra-Buddhist dialogue,this approach could help Buddhists of different sects avoid a good many estrangements and focus on liberation to make a contribution to the human world on which all sects target . Similarly,in this approach,the relationship between different religions,such as Buddhism and Christianity,could turn away from doctrinal conflicts and cooperate with each other in promoting world peace and step into the Second Axial Age.