Human life is the main concern of the fundamental ethic; moreover, life is the ontology problem by excellence. In other words, life is the being absolutely necessary to provide the fundament and condition the possibility for any other idea, value or principle, including of course the human deeds. This is to say there is absolutely nothing that define human life that is not the own being, the human being is for each individual the totallity of the I can. The I can is in reality an open life and openness is essencially opening to the future. The authentic knowledge of Iife is called understanding, and it is the knowledge of life itself.