At the question what is the difference between God and a surgeon when the latter thinks he is the creator of his patient, we usually answer that God does not think he is a surgeon. However it seems there is a spiritual/religious dimension in the act of surgery, meaning there is a definite link with what is sacred, forbidden, what should never be defiled. If each and every surgeon is a doctor before being anything else, and as a doctor his role being to relieve a human person affected by a disease or a trauma, his way of 'operating' is particular. Despite the imposing help of science-technology, surgery is still a manual activity that is particularly immediate. And above all it is very aggressive, because it causes pain and blood is involved, and transgressive because it allows his representative to 'step in' the human body.This intervention always happens with a lot of almost religious rituals that certifies the sacredness of the field/subject : the body-person belonging to the operated. Despite the profound influence of the Modernity that particularly for Descartes aims for a completely dissociation between the body and the spirit, a drastic analysis of the surgical practice tends to invalidate this illusion, even though there is a need to objectify the subject to be able to undertake the infringement of opening a human body. The surgeon could never simply be fixing an object or even be a veterinary, because he is obligated to respect the moral specificity of the human being he is in charge of. More than putting the person back in an arbitrary standard, this duty of aiming for the re-establishment of 'being able to be' in the world of the person operated, makes surgery an ethical act. Because trying to forget that intention by exonerating oneself of this responsibility that goes beyond the simple action, would reduce surgery to a plain manufacturing. But one must be careful of the exaggeration of believing he is God in the wrong way because it might allow the doors of savagery to slowly open.The transhumanism carrying the question of the contribution of surgery to the wide desire to transform the human being, might takes its source from an insidious savagery. Finding the spiritual nature of the human being is then definitely the starting point to ward off such a drift, keeping the person who is operated and the act of operating sacred.