From its etymological roots sex is related to a scission Latin for sectus secare meaning to divide or cut. Therefore regardless of the various studies applied to defining sex as inscribed by discursive acts i. e. merely a 'performatively enacted signification' there is something more to sex than just a social construction or an aprioristic substance. Sex is irreducible to meaning or knowledge. This is why psychoanalysis cannot be formulated as an erotology nor a science of sex (scientia sexualis). In this matter sex escapes the symbolic restraints of language; however it is through its failure that it manifests itself through the symbolic e. g. symptoms or dream life. So what is sex? Sex and Nothing embarks upon a dialogue between colleagues and friends interested in bridging psychoanalysis and philosophy linking sex and thought where what emerges is a greater awareness of the irreducucibility of sex to the discourse of knowledge and meaning: in other words sex and nothing. Language: English