Quote by Gerald M. Weinberg

“It’s not what you don’t know that gets you in trouble. It’s what you do know that ain’t so. —Will Rogers or Mark Twain…

— Edward B. Burger

“What gets us into trouble is not what we don't know. It's what we know for sure that just ain't so.”

— Mark Twain

“The knowing is easy. It's the doing that gives us trouble.”

— Vannetta Chapman

“It's not what you know, it's when you know it.”

— Kathy Sierra

“We don't know what we don't know.”

— Dave Meier

“Sometimes what we don't know protects us. It can't hurt us if we don't know it.”

— C.C. Hunter

“Mark Twain said a century ago, “It’s not what you don’t know that gets you into trouble, it’s what you know for sure that…

— Tom Kelley

“Mark Twain said “it ain’t what you don’t know that gets you into trouble, but what you know for sure that just ain’t so.”

— Terence Callery

“The guy who isn't in the know can't understand ... how hard it is to be in the know and still not say.”

— CLAMP

“you don’t know won’t hurt you. A dubious maxim: sometimes what you don’t know can hurt you very much.”

— Margaret Atwood

“Everyone has to speak of what they know, and what they do not know they should ask,”

— José Saramago

“We know what we are, but know not what what we may be.”

— William Shakespeare