Author has given an interpretation of quantum mechanics in totally new approach named Dialogue Principle. Author point out how similar is the living phenomena and human behavior to the movement of elementary particles, if we agree with that the wave function implies the existing probability of elementary particles in the topological space. In the dialogue principle, the reasons for this similarity is explained by introducing common concept “character” and “will” among living specimens as well as elementary particles. Author describes that “will” is the origin of all strange behavior among elementary particles as well as human beings. “Will” is the subject of 21st Century to be studied scientifically. Author proposes that the concept of “will” should be added to the base of modern science to gives unified understanding of all existence including elementary particles, human beings, and universe. In this paper the digest of the dialogue principle is given, and approaches to the meaning of life by the philosophy of quantum mechanics. © 2004 American Institute of Physics