Business development Quote by Big Al Connolly

You don't know what you don't know.

— Anonymous

What you know you know. What you don't know, you don't know. This is knowledge.

— Confucius

Know what you know and know that you don't know what you don't know — that is the characteristic of one who knows.

— Confucius

I know that you don't know, but you don't know that you don't know.

— Harvey Mackay

What you know, you know, what you don't know, you don't know. This is true wisdom.

— Confucius

“I only know, I know nothing”

— Socrates

When you start talking about the known knowns and the unknown unknowns, you're thrown into a crazy meta-level discussion. Do I know what I…

— Errol Morris

If I don't know I don't know, I think I know. If I don't know I know I know, I think I don't know.

— R. D. Laing

“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

I know what I know, and what I don't know, I'm willing to admit.

— Stephen A. Smith

You know a lot, but you don't know everything.

— Mary J. Blige

My life has become this one big 'I don't know'

— Ramandeep Singh