There are books of a devastating power that men try to deny at any cost, without logging in: The only one and his property, by Max Stirner, is one of them. Not surprisingly, since his appearance in 1844 he was abducted by the authorities, arguing that it violated all values, both religious and social, that should prevail in a healthy and decent society. But it was also attacked with great virulence by Engels and Marx in German ideology. In short, it is a book that disables the susceptibilities of almost all who try to move from one type of religious dependency to another without realizing it. That is why Stirner does not cease to reproach the "new Blesseds", those who stopped worshiping God to worship instead the State, Society, Man and all those capital letters that are installed as euphemisms of all the gods who have Been forgotten in the dark regions of fantasy. Stirner's approach is as clear as it is unbearable: only I and all that I conquer is valid. We are faced with the most radical and congruent selfish posture ever posited. Nietzsche himself, always silent, seized the thought of Stirner and used it as a raft in the midst of the prosaic sea of ​​gazmoñería and the stupidity of the moderns. Johann Kaspar Schmidt-this is Stirner's real name-was a solitary teacher at a ladies' school. He never published another book. And these data illuminate the astonishment that this singular writing provokes when we contemplate the destiny that finally suffered: to be one of the most hated books just to be the most accurate radiography of the so-called modernity.