I think Quote by R. D. Laing

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

If I do not know that I do not know, I think I know. If I do not know that I know, I think…

— R. D. Laing

If you know, say you know. If you don't know, say you don't know.

— Confucius

If I don't know something, I'll tell you I don't know it. If I'm not sure about something, I'll say I'm not sure.

— Stephanie Winston Wolkoff

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

— Harvey Mackay

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

— Socrates

To say I don't know when you don't know, is actually a correct answer.

— Mufti Ismail Menk

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

— Confucius

You think you know me, but you have no idea.

— Evanescence

I know enough to know that I don't know what I don't know.

— Rock Cowles

I know what I do not know.

— Socrates

Even when you don't know, you're supposed to know.

— Michael Eric Dyson