Quote by Guy P. Harrison

Learn to say 'I don't know.' If used when appropriate, it will be often.

— Donald Rumsfeld

“Learn to say "I don't know" when you really DON'T know.”

— levitt, steven

I don't know" means "NO!" "I don't know" means "I'm too cowardly to tell you the truth because I can't deal with confrontation." "I…

— Greg Behrendt

When you don't know that you don't know, it's a lot different than when you do know that you don't know.

— Bill Parcells

Never say ‘you don’t know’, say, ‘I’ll find out!’

— Jim Michaels

“What do you know that you’re not telling me?" "I don’t know what you know, so I don’t know what you don’t know.”

— Magnus Flyte

“Saying 'I don’t know' is one of the most powerful things you can say because it creates the potential to find out.”

— Kyle Schmalenberg

“Never ask a question if you don’t know the answer.”

— Rowena Cherry

“What I do not know, I do not think I know.”

— Socrates

“They never said “I don’t know.” They said, instead, “I’m not sure,” which did not give any information but still suggested the possibility of…

— Chimamanda Ngozi Adichie

“I don't know and I really don't like not knowing”

— Sherlock

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

— Neil Leckman