ACritique of Cartesian Libertarianism

Compatibilism says that determinism is logically consistent with libertarianism.Libertarianism, as a branch from incompatibilist, argues that free will is logically incompatible with a deterministic universe, agents have free will, and therefore determinism is false. Was Descartes a libertarian? There is no doubt that he was a libertarian; The standard account of Cartesian dualism says that “self” could be a first cause without being effected by other causes. But I will say that his libertarianism is based on a compatibilist factor -spontaneity- instead of a incompatibilist one -alternative possibilities. Finally we can see that his view is a compatibilist in three aspects.