The concept of human dignity lies at the heart of many national and international conventions of human rights. This idea, based on man's rationality, can be found already in Greco-Roman Antiquity, was fully developed in Christianity, in its synthesis with the Biblical conception of man as image of God. With the secularization of the European mind from the 18th century onwards, the justification of human dignity becomes problematic. This most influential attempt to justify it by secular rationality came from Kant, who saw man’s dignity as deriving from his capacity for moral reasoning and from it came the notions of autonomy and equality. However, during the last two centuries, secularized cultures produced skeptical attitudes toward both th...