The nature of possibility, intrinsically tied to the ontological status of essences, is a core question in Edmund Husserl\u2019s phenomenology. At first sight, a Platonic interpretation, where essences and possibilities are conceived as entities separately existent from consciousness, seems plausible. However, this account is inacceptable in a phenomenological framework, where the reference to any non-actual dimension must be accounted for by constituting acts of consciousness. Husserl mentions two distinct levels of possibility: empty possibilities and motivated possibilities. Some appearances notwithstanding, it turns out that even empty possibilities (which provide the basis for formal ontology) rest on an experiential ground: empty poss...