Slavoj Žižek is one of the world's leading contemporary cultural critics and a hugely prolific author. He is Professor of Cultural Studies at the University of Ljubljana, Slovenia, international director of the Birkbeck Institute for the Humanities, UK, and Visiting Professor at the New School for Social Research, New York, USA.

The concept of disparity has long been a topic of obsession and argument for philosophers but Slavoj Žižek would argue that what disparity and negativity could mean, might mean and should mean for us and our lives has never been more hotly debated.

Disparities explores contemporary 'negative' philosophies from Catherine Malabou's plasticity, Julia Kristeva's abjection and Robert Pippin's self-consciousness to the God of negative theology, new realisms and post-humanism and draws a radical line under them. Instead of establishing a dialogue with these other ideas of disparity, Slavoj Žižek wants to establish a definite departure, a totally different idea of disparity based on an imaginative dialectical materialism. This notion of rupturing what has gone before is based on a provocative reading of how philosophers can, if they're honest, engage with each other. Slavoj Žižek borrows Alain Badiou's notion that a true idea is the one that divides. Radically departing from previous formulations of negativity and disparity, Žižek employs a new kind of negativity: namely positing that when a philosopher deals with another philosopher, his or her stance is never one of dialogue, but one of division, of drawing a line that separates truth from falsity.