OA scholars

proponent:

12th century

St Anselm

‘God is not possible not to be’

20th century

Norman Malcolm

‘It is logically impossible for God to not exist’

critic:

Gaunilo

‘The Perfect Island’

Russell

‘Ontological Arguments are cases of bad grammar’

defender:

Plantinga

‘You cannot compare islands to God’

William Lane Craig

‘The OA is logically valid; if it's premises are true, then the conclusions necessarily follow’

revised proposition:

12th century - St Anselm

‘God’s existence is necessary’

n/a

critic:

Kant

‘Existence is not a predicate’

n/a

defender:

Descartes

‘Existence is a predicate of perfection’

n/a

well