"But is all this true?' said Brutha.

Didactylos shrugged. 'Could be. Could be. We are here and it is now. The way I see it is, after that, everything tends towards guesswork.'

You mean you don't KNOW it's true?' said Brutha.

I THINK it might be,' said Didactylos. 'I could be wrong. Not being certain is what being a philosopher is all about."

I for one believe in Terry Pratchett.