“An ignorant person is one who doesn't know what you have just found out.”
As quoted in Peter's Quotations : Ideas for Our Time (1979) by Laurence J. Peter, p. 258
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Will Rogers 121
American humorist and entertainer 1879–1935Related quotes
“The person who told you that doesn't know why I did it.”
When asked in 1956 why in February 1954 he had sat with patient Clara Neil Miller for forty minutes with her "bed clothes all off... and over the foot rail of the bed, her night gown up around her chest and the window in the room open top and bottom", while Adams read to her from the Bible.

“A celebrity is one who is known to many persons he is glad he doesn't know.”
1940s–present, A Mencken Chrestomathy (1949)

“The question is asked in ignorance, by one who does not even know what can have led him to ask it.”
Preface
1840s, Philosophical Fragments (1844)

Interview on radio staion 610 WIP (20 March 2008), as quoted in Chris Wallace criticizes Fox & Friends for "two hours of Obama bashing" in which hosts "distort … what Obama had to say" (21 March 2008) http://mediamatters.org/print/research/200803210008
2008

“A person knows what he knows. An animal knows, but doesn't know what he knows”
Fire without Fuel - The Aphorisms of Baba Hari Dass, 1986
Context: A person knows what he knows. An animal knows, but doesn't know what he knows. In Yoga, "I" consciousness is called asmita klesha. It is classified as an affliction and a hindrance to attaining higher consciousness. There is always a chance for a person to break out of the cycle, but there is no such chance for an animal unless it incarnates as a human and develops "I" consciousness. (p.36-7)