Many thinkers have chosen to see [the Babel Fish] as a final clinching proof of the non-existence of God.

The argument runs something like this: "I refuse to prove that I exist," says God, "For proof denies faith, and without faith I am nothing."

"But," says Man, "The Babel Fish is a dead giveaway, isn't it? It proves you exist, and so therefore you don't. QED."

"Oh dear," says God, "I hadn't thought of that," and promptly vanishes in a puff of logic.

"Oh, that was easy," says Man, and for an encore he goes on to prove that black is white and gets killed on the next zebra crossing.