Promethium, the last element discovered in the periodic series, received its name from Prometheus, who brought fire to humanity and thus incurred the wrath of the gods. It serves here as a warning! The humanistic ideal appears damaged after the murderous wars of the 20th century and calls for a realignment of knowledge about humanity, far from a disastrous idealization. God is truly dead. If we have killed him, he remains, however, as a dead figure trapped in our memory and conscience. The origin of our misunderstanding lies in the knowledge that humanity has not yet been thought deeply enough. The phrase "We are not meant" emerges as a guiding motif for a realignment towards the open. Existence stretches human possibility towards a yet-to-be-defined horizon, which may herald the disappearance of our civilization.