This article explores reasons for theologising in dialogue with contemporary postmodern philosophy. Elaborating on a particular instance of a theological engagement with Jean-Francois Lyotard, I argue that theology is capable of creatively reflecting on the very question of its own mission. What can we learn from Lyotard and his thought? And more generally, why should (fundamental) theology take contemporary postmodern philosophy seriously and what are the consequences of such an engagement? The offered answers will suggest the concept of thinking as the path of authentic and plausible theology in a postmodern context.