The history of metaphysics is rich in turning points and torments. Initiated by Aristotle but with the difficulty of conceiving in a univocal way what she is looking for, she seems to have set her goal in the 17th century, when the word «ontology» was invented. This invention constituted a real «turning point» of metaphysics in the direction of one-sided rationalism. And it is precisely against this ontology that Nietzsche and Heidegger rose up. The «torments» of metaphysics today arise from such a turning point, or rather from a reaction to this turning point without, however, returning to ancient hesitations. Rather than remaining in the sterile debate between an «ontological» metaphysics on the one hand and phenomenology on the other, this book attempts to take stock of the possible and mutual fruitfulness between phenomenology and metaphysics, with the confrontation by authors as diverse as Eric Weil, Emmanuel Levinas or Michel Henry.