The vampire looked from the golem to Vimes.
“You gave one of them a voice?” he said.
“Yes,” said Dorfl. He reached down and picked up the vampire in one hand. “I Could Kill You,” he said. “This Is An Option Available To Me As A Free-Thinking Individual But I Will Not Do So Because I Own Myself And I Have Made A Moral Choice.”
“Oh, gods,” murmured Vimes under his breath.
“That’s blasphemy,” said the vampire.
He gasped as Vimes shot him a glance like sunlight. “That’s what people say when the voiceless speak.”
Terry Pratchett, Feet of Clay