The radical posthumanism of Kurzweil aims to achieve immortality. Fukuyama and Habermas criticize posthumanism defending the idea of an inalterable human nature. Pinker, for his part, considers that there is a human nature, but susceptible to modifications. There is a limit to human nature: it is found in the mortal nature of each member of the human species. Sloterdijk will introduce a nuance and insist on the natality of the creative acts of man, standing in continuity with the Nietzschean concept (...) of overman. (shrink)