The issue of surrogate motherhood is one of the most manipulated in public debate. It often sees humanist categories give way to those of post-humanism, where public reflection accepts passively the achievements of science. When the dignity of the weakest – namely the unborn child and the pregnant mother – is damaged, how much can the subjective desire of the commissioning couple become a right in a democratic order? An anthropological approach to surrogate maternity faces the question at the very heart of science: how it can be useful to humanity without abusing the human person.