This paper presents the problem of the theodicea in modern philosophy as a rational strategy to face the precariety of human existence and the real precence of evil in the world.The leibnizian theodicea takes on the defence of the causa dei as a defence of the causa rationis, and this metaphisical project displays at the begining a far reaching search of justifications legitimating the rational world order. Alter this viewpoint evil becomes a sort of conditio sine qua non of the full revelation of reality. Theodicea asumes that creation as such ís a rational one. God can not act out of the order. The aim of this strategy, legitimating the perfect and rational order of creation is examined at the light of the there of Hans Blumenberg, shows how the central formulations of modern philosophy are the offsprings os a structural confrontation between theological absolutism and the burgeois desire of human selfaffimation. The anthropological model corresponding to this proyect is the burgeois idea of the horno compensator. The attempts to provide an ultimate meaning to reality, are condemned to failure, since they are established in the illusion of the fact that there is an ontological correspondence between the world and the human existence.