‘I Think Therefore I Was’: Sartre, Kant, and the Self

The aim of this paper is to develop a new reconstruction of Sartre’s arguments against Kant’s account of the unity of experience in the transcendental deduction. In the Transcendence of the Ego, Sartre presents several arguments to show that Kant is unwarranted in moving from the claim that we can attach an ‘I think’ to our representations to the claim that this is made possible by a synthetic unity of apperception. While Sartre’s criticism of Kant’s conception of the ego is central to Sartre’s existential philosophy, there is still little agreement on what Sartre’s criticisms actually amount to, let alone whether these criticisms are successful. I argue that to make sense of Sartre’s argument here, we must see it as relying on a distinction between two different models of what it is for something to be organised or determined. By doing so, we can see why Sartre believes consciousness does not need the ‘I think’ in order to be unified, but also why Sartre believes we are nonetheless led to posit this moment of unification.