Abstract: This article analyses the meaning of melancholy in Michel Lambert’s, Dieu s’amuse. There is a metaphorical onto-thanatology that builds a character distinguished by a melancholic affectivity. The origin of this trait is to be found not only in an incapacity of living in the present and let go of the past (the latter being a source of sadness, suffering, unhappiness and boredom), but also in a tendency to mourn.