445).
This understanding therefore exists within “the understanding and in reality” (pg. 445). The argument continues with if you were to think God not to exists is just proving that he does because you cannot think of something that does not exist. And this is the argument that Gaunio is going to try and disprove. For Anselm believes, There is then, so truly a being than which nothing greater can be conceived to exist, that it cannot even be conceived not to exist; and this being thou art, O Lord, our God (pg. 445).
And for Gaunilo’s criticism, he takes the part of the fool because he believes he can think of something greater. Gaunilo’s, claim, “it is said that somewhere in the ocean is an island, which because of the difficulty, or rather the impossibility, of discovering what does not exist, is called the lost island” (pg. 446). This Island has more riches and resources than any land that is inhabited by man. Now he wants you to understand that someone is saying that there is no other Island greater than this one. If someone were to say