Abstract
In my paper, "berkeley's christian neo-Platonism" ("journal of the history of ideas", July, 1976) I had maintained that george berkeley was a christian neo-Platonist who believed that abstract ideas exist in the mind of god, And that God used these ideas as archetypes during creation. Robert mckim commented that berkeley considered abstract ideas to be logical impossibilities, And therefore did not believe them to exist in god's mind. My reply is that berkeley employs two different concepts of impossibility for two different kinds of abstract ideas, Those that are logically impossible, And others that are impossible for humans to perceive due to limitations peculiar to the human mind