“The only thing new in the world is the history you don't know.”
As quoted in Plain Speaking : An Oral Biography of Harry S Truman (1974) by Merle Miller, p. 26
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Harry Truman 119
American politician, 33rd president of the United States (i… 1884–1972Related quotes

“The world, even the smallest parts of it, is filled with things you don't know.”

Wonderful World
Song lyrics, The Wonderful World of Sam Cooke (1960)

“If you don't know your history, you don't know who you are. Holds true for nations too.”
Twitter (17 Oct 2017) https://twitter.com/jbf1755/status/920253923209904128

“You don't know me; you never knew my heart. No man knows my history.”
History of the Church 6:317 (7 April 1844)
1840s, King Follett discourse (1844)
Context: You don't know me; you never knew my heart. No man knows my history. I cannot tell it: I shall never undertake it. I don't blame any one for not believing my history. If I had not experienced what I have, I could not have believed it myself.... When I am called by the trump of the archangel and weighed in the balance, you will all know me then.