Abstract : The child of natality (Arendt) is free; the world opens up for him from his birth. He is the beginning of a new story, and he can give humankind a chance.But this little human being, whose very existence is premature, is brutally separated from his 'placenta double' and from his mother's womb. He is thrown into the world (Heidegger), into the angst of his finiteness. If he does not meet his human mediators upon his birth, and his mother in the first place, he will not survive and will not be prepared to face negativity and the Other.The mother needs to meet the birth mediators to make room for the birth space, and to welcome her child through their separation. She needs to meet the mediators to let the mother tongue come to the child, and to let a soul enter this newcomer. Some mediators will vanish after having played a part in crossing one world to the next; others will remain as - protecting or threatening - doubles. They are present for each birth, and are there to see the beginning of new human lives. Myths and rites identify them in all cultures.But contemporary medicine, based on new technologies and techniques, has taken control of the birth process. It fears the separation and is in denial - of the pre-gnancy and of the other woman as well as of the birth mediators. Contemporary medicine is based on technical and mathematical expertise. It uses medical imaging and statistics to create an imaginary double of the child-to-be-born: this child becomes a scientific project, immortal and perfect, hidden behind the parenting project.Midwives cross these worlds, and they are in contact with the mediators. A mid-wife is not only the daughter of medicine but also a healer or a witch, practising maieutic and the art of delivering bodies and souls. Her art is a complex one, her wisdom is unspeakable and when she crosses those worlds, she is always threate-ned of disappearing, choked by the enframing (Gestell) of the forever-winning Technique. Midwives are carried away by the excessive desire of men to create themselves or by the temptation of the 'backworlds' to leave them behind, in the obscurity of archaic mysteries.