“Be curious, not judgmental.”
While consistently attributed to Whitman, this popular motivational quote has no source. It is occasionally listed as occurring in Leaves of Grass, but the closest phrase found in that collection is "Be not curious about God."
Disputed
Variant: Be curious, not judgmental.
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Walt Whitman 181
American poet, essayist and journalist 1819–1892Related quotes

The Rebel (1951)
Context: One might think that a period which, in a space of fifty years, uproots, enslaves, or kills seventy million human beings should be condemned out of hand. But its culpability must still be understood... In more ingenuous times, when the tyrant razed cities for his own greater glory, when the slave chained to the conqueror's chariot was dragged through the rejoicing streets, when enemies were thrown to the wild beasts in front of the assembled people, the mind did not reel before such unabashed crimes, and the judgment remained unclouded. But slave camps under the flag of freedom, massacres justified by philanthropy or by a taste for the superhuman, in one sense cripple judgment. On the day when crime dons the apparel of innocence — through a curious transposition peculiar to our times — it is innocence that is called upon to justify itself.

“Outward judgment often fails, inward judgment never.”
As quoted in Dictionary of American maxims (1955) edited by David George Plotkin.

Address at the dedication of the Northwestern University Law School Building, Chicago, Illinois (20 October 1902); republished in Holmes' Collected Legal Papers (1937), p. 272.
1900s

“A mistake in judgment isn't fatal, but too much anxiety about judgment is.”
"Zeitgeist and Poltergeist; or, Are Movies Going to Pieces?" http://www.paulrossen.com/paulinekael/aremoviespieces.html (December 1964), from I Lost It at the Movies (1965).

Source: The Mike Wallace Interview (1958)
“Good judgment comes from experience, and experience comes from bad judgment.”
Brown may have used this quote in 2001 but it was it in a 365 day "Quote" calendar in 1994.
Source: Alma Mater
“Good judgment comes from experience, experience comes from bad judgment.”
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