Abstract
Though many philosophers and scientists have been tried to define life, the view of materialism is substantiated by modern bioscience. Reductive approach of biology, however, cannot explain the holistic nature of life. As the science of complexity showed, life form is appeared on earth by emergence with self-organized criticality. From the interdependency of emergent life on others, man could be called as 'Homo interdependant' on network of biosphere. Phylogeny of life in evolutionary process showed 'difference and repetition'. With the emergent nature of life, difference caused the individuality, which is a one of most distinguished features of life. Furthermore, because Individual experience cannot be replaced by others, responsibility of each daily life was also emerging.