Louise

“No it's not!" said Constable Visit. "Atheism is a denial of a god."

"Therefore It Is A Religious Position," said Dorfl. "Indeed, A True Atheist Thinks Of The Gods Constantly, Albeit In Terms of Denial. Therefore, Atheism Is A Form Of Belief. If The Atheist Truly Did Not Believe, He Or She Would Not Bother To Deny.”
― Terry Pratchett, Feet of Clay

“And what would humans be without love?"
RARE, said Death.”
― Terry Pratchett, Sourcery

“Real stupidity beats artificial intelligence every time.”
― Terry Pratchett, Hogfather