Is everybody crazy, if only God is sane?

"You'd have to be crazy to be so sane," said the Evil Banshee of Change,
"but lucky for you that really everybody is crazy, because only God is truly sane."

"What do you mean by sane?" asked the Crazy.

"By truly sane I mean 'all-knowing' or omniscient, and of course rational,"
replied the Evil Banshee of Change, "Nobody is sane by those standards."

"Oh," said the Crazy, "Well now I don't feel so alone!"