“The only thing to do with good advice is to pass it on. It is never of any use to oneself.”
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Oscar Wilde 812
Irish writer and poet 1854–1900Related quotes

“Shun advice
at any price -
that's what I call
good advice.”
Good Advice
Grooks

“It is always a silly thing to give advice, but to give good advice is absolutely fatal.”
The Portrait of Mr. W. H. (1889), p. 5
Source: Lady Windermere's Fan

12 September 1936, Advice to the pupils of the Bishop Cotton School, Simla, also quoted in Speeches and Statements of the Marquess of Linlithgow, p. 19

This quote is often attributed to William Penn, but there are no records of it before the 19th century, and its actual source seems to have most likely been another prominent Quaker, Stephen Grellet.
Misattributed
Source: The Wheel of Time: Shamans of Ancient Mexico, Their Thoughts About Life, Death and the Universe], (1998), Quotations from A Separate Reality (Chapter 6)

“A prince who is not wise himself will never take good advice.”
Variant: Variant translation: A prince who is not wise himself cannot be wisely counseled.
Source: The Prince (1513), Ch. 23; translated by W. K. Marriot
http://www.friesian.com/econ.htm
Variant: ... tell them that we have some good in us, too. And the only thing worth living for is the good. That’s why we’ve got to make sure we pass it on.
Source: Where the Heart Is

cited by Craig A. Masback, "A Sports White Paper for Clinton," http://www.nytimes.com/1993/01/24/sports/backtalk-a-sports-white-paper-for-clinton.html?pagewanted=2&src=pm New York Times. January 24, 1993, p. S-11.