“The problem of quality management is not what people don't know about it. The problem is what the think they do know.”

“The problem ain't what people know. It's what people know that ain't so that's the problem.”

Will Rogers (1879–1935) American humorist and entertainer

“The problem with experts is that they do not know what they do not know”

Nassim Nicholas Taleb (1960) Lebanese-American essayist, scholar, statistician, former trader and risk analyst

“The problem in my life and other people's lives is not the absence of knowing what to do but the absence of doing it.”

Peter F. Drucker (1909–2005) American business consultant

“People resent being shown that they don't approach the complexities of the problem — they don't know what exists beyond the surface ripples.”

Daniel Keyes book Flowers for Algernon

“Positive thinking is how you think about a problem. Enthusiasm is how you feel about a problem. The two together determine what you do about the problem.”

John C. Maxwell (1947) American author, speaker and pastor

“The problem isn't that Johnny can't read. The problem isn't even that Johnny can't think. The problem is that Johnny doesn't know what thinking is; he confuses it with feeling.”

Thomas Sowell (1930) American economist, social theorist, political philosopher and author

“If a manager asks an academic consultant what to do and that consultant answers, then the consultant should be fired. No academic has the experience to know the context of a managerial problem well enough to give specific advice about a specific situation.”

James G. March (1928–2018) American sociologist

“People know what they do; frequently they know why they do what they do; but what they don't know is what what they do does.”

Michel Foucault (1926–1984) French philosopher

“I think that people here expect miracles. American management thinks that they can just copy from Japan—but they don't know what to copy!”

W. Edwards Deming (1900–1993) American professor, author, and consultant