ABSTRACT
This chapter discusses the ontological argument for the existence of God. This argument claims that since the concept of God is a concept of a perfect thing, and since God would be less than perfect if he did not exist, then God must exist. One argument for the being theory arises from the problem of true negative singular existential statements. A singular existential statement says that some named or described thing exists. A negative singular existential statement says that a named or described thing does not exist. For some philosophers (the actualists) whatever exists is actual. Indeed, something is actual if and only if it exists. The debate between the actualist and the possibilist is then a debate about whether there exist things other than actual things. Both sides agree that actual things exist. Both sides agree that for something to be is for something to exist.
