" Another priest said,"Is it true you've said you'll believe in any god whose existence can be proved by logical debate?"

"Yes."

Vimes had a feeling about the immediate future and took a few steps away from Dorfl.

"But the gods plainly do exist," said a priest.

"It Is Not Evident."

A bolt of lightning lanced down through the clouds and hit Dorfl's helmet. There was a sheet of flame and then a trickling noise. Dorfl's molten armour formed puddles around his white-hot feet.

"I Don't Call That Much Of An Argument," said Dorfl calmly, from somewhere in the clouds of smoke. "

― Terry Pratchett , Feet of Clay (Discworld, #19; City Watch, #3)