At a glance Deleuze and Badiou can be seen to proceed along parallel paths in opposition to what might be called a contemporary koinè. Their work counters the claim that we bear witness to an ‘end’of philosophy: philosophy has always been and continues to be specified by its operational procedures, which distinguish it as radically from science (more generally, from the knowledge of states of affairs) as from art (and Badiou adds: from politics and from love). Deleuze attributed uniquely to philosophy ‘the art of forming, inventing, fabricating concepts’3; Badiou, while denying it can create truths, vests it with securing the compossibility of the truths that these four produce, the only ones that can. These procedures, then, make up so many of philosophy’s ‘conditions’. For both thinkers, the operations specific to philosophy are immanent: they are uniquely immanent to thought, are grounded in what is ‘presented’