Discworld Quote by Terry Pratchett

“It just goes to show that no matter how well you think you know someone, the truth is, you will never know everything.”

— B.M. Hardin

“But I always find it prudent to suspect everybody just a little. What I say is, you really never know, do you?”

— Agatha Christie

“The only thing I know is that I know nothing, and i am no quite sure that i know that.”

— Socrates

“You don't know what you don't know until someone who knows tells you about it. That's when you know that there's more to know…

— Joan Marques

“You just never know”

— Kevin Marsh

“They say you don't know what you don't know until you know that you don't know it.”

— Neil Leckman

“One thing I know: you just never know.”

— Ellis L. Knox

“You will never know, until you know”

— Pura Preis

“I will never know, because I will never be able to be in the position to witness those things. And I don't care to…

— Maria Karvouni

“If there's one thing I know for sure, it's that nothing is ever sure.”

— Alyson Noel

“We are not certain, we are never certain.”

— Albert Camus

“She's never sure, never knows, never goes.”

— Emma Cameron