Pietro Piovani is a philosopher who is still, unjustly, little known. Here we set out to investigate the absence of foundation as a crossroads in contemporary philosophy and to evaluate the new contribution of Piovani’s reflection. In our study, we analysed mainly the works of the past twenty years and especially Principi di una filosofia della morale (1972) and Oggettivazione etica e assenzialismo(1980). The basic option in Piovani’s thinking is that, given the finite nature of the individual, as the willing who was not self-willed, man no longer needs any foundation. In fact, the contemporary individual is more unfounded than ever, having to constantly base himself on and interact with a reality that is ever changing. Piovani reaches the height of his critical foundation by stating that, forced to stabilise his own instability, man must base his existence on an absence. Here, Piovani, through the "non self-willed willing", eradicates the assumptions of modern thought, and captures the beginning of existence in the experience of limitation and finiteness. Man, who is based on de-ontology, on de-esse, is a sign of a dissatisfaction that asks to be satisfied, of an inadequacy. This study highlights how Piovani’s thinking, having abandoned the perspectives of Western ontology, proposes a new reflection on the positivity of the inadequate where absence is heralded as the greatest energy force of life. Philosophy, therefore, has a future only as negative philosophy.