I'm absolutely sure you are aware of it, and is making a sarcastic account of the misattribution. But just to spread the 'correct' knowledge - the quote, while

I'm absolutely sure you are aware of it, and is making a sarcastic account of the misattribution. But just to spread the 'correct' knowledge - the quote, while attributed to Voltaire, as it fits his style so succinctly well, is not actually said by him. It was a quote from 'The Friends of Voltaire', and misrepresented him.