The aim of this text is to show that, according to Augustine of Hippo –and in contrast to a relatively classic lecture of Pascal–, desire can be de beginning of the relation between man and the Absolute. I will divide the work into four parts: first I will describe the existential situation in which desire is born: restlessness. In second place I will describe the development of desire: as love or as concupiscence, according to its object and inclination. In third place I will try to describe the types of concupiscence and their parallelism in both authors. I conclude showing the importance of habit in the constitution of desire.