He who knows best... (Quotation)

"The wise know their weakness too well to assume infallibility; and he who knows most, knows best how little he knows." - Thomas Jefferson, February 25, 1812, The Proceedings of the Government of the United States, in maintaining the Public Right to the Beach of the Missisipi, Adjacent to New-Orleans, against the Intrusion of Edward Livingston^[1]

Note: This passage is often erroneously quoted as, "He who knows best, knows how little he knows."