Abstract
This chapter re-examines Baumgarten's definition of 'existence' with an eye to evaluating Kant's criticisms of this definition in his pre-Critical writings. It shows that Baumgarten sharply distinguishes existence, as a specific content, from actuality, as the determination with respect to the same content, in a way that has gone unnoticed by pevious commentators. Afer explaining the implications of this disocovery for our understanding of Baumgarten's view of existence in general, it uses this to construct his version of the ontological argument. The chapter highlights the originality of Baumgarten's version of the argument by comparison with Wolff's and argues that Baumgarten's conception of existence allows him to avoid the objections brought forward by Kant in the Only Possible Arugment in Support of a Demonstration of God's Existence.