This chapter aims to show that the scientific approach to nature, in particular to animals and human beings, is not sufficient to understand the sense of their organism, because it does not explain the sense of their life. Furthermore for the same reason it is not possible to affirm that the human being is a machine, or that a machine could develop so that it can become like—or sometimes as the same in—a human being. To support this assumption I assume a phenomenological attitude following the analyses proposed by Edmund Husserl and some of his scholars.