The Truth by Terry Pratchett (Discworld 25)

“Really true? Who knows? This is a newspaper, isn't it? It just has to be true until tomorrow.”

The twenty-fifth Discworld book is focused on the twin cities of Ankh-Morpork and some world-building. Dwarves there have invented the printing press, and this means the floodgates of new ideas are opened, and not everyone approves.