The continuation of philosophy is important for both Badiou and Deleuze. Both of their enterprises are animated by modern thinkers Spinoza for Deleuze and Descartes for Badiou. Deleuze is more modernist than Badiou on one essential point: he sees philosophy having its own exclusive role as the creator of concepts. For Deleuze, the mathematical multiplicities that Badiou valorizes are always only purely formal modalities, empty of value and abstract in the wrong way. Some variance between Deleuze and Badiou is notions of abstraction, and truth. Deleuze links the problematic of truth to that of the event explicitly: time has always put the notion of truth into crisis it is the form or rather the pure force of time that puts truth into crisis. Badiou, having the same parentage as Plato, must also treat Deleuze as an adversary, yet not because of the differends that alone separate them, but despite them.