The world is increasingly unthinkable, a world of planetary disasters, emerging pandemics, and the looming threat of extinction. In this book Eugene Thacker suggests that we look to the genre of horror as offering a way of thinking about the unthinkable world. To confront this idea is to confront the limit of our ability to understand the world in which we live – a central motif of the horror genre.

In the Dust of This Planet explores these relationships between philosophy and horror. In Thacker’s hands, philosophy is not academic logic-chopping; instead, it is the thought of the limit of all thought, especially as it dovetails into occultism, demonology, and mysticism. Likewise, Thacker takes horror to mean something beyond the focus on gore and scare tactics, but as the under-appreciated genre of supernatural horror in fiction, film, comics, and music. This relationship between philosophy and horror does not mean the philosophy of horror, if anything, it means the reverse, the horror of philosophy: those moments when philosophical thinking enigmatically confronts the horizon of its own existence. For Thacker, the genre of supernatural horror is the key site in which this paradoxical thought of the unthinkable takes place.

In The Dust of This Planet is the first volume of the "horror of philosophy" trilogy, together with the second volume, Starry Speculative Corpse, and the third volume Tentacles Longer Than Night.