
Speech in the House of Commons, May 17, 1916 "Royal Assent" http://hansard.millbanksystems.com/commons/1916/may/17/royal-assent#column_1578.
Early career years (1898–1929)
As quoted in, but without a documented source: Joseph Romanella (2012): Adam's Dream: Is Everything We Think, Believe, and Perceive Real—or Is It All Imaginary? https://books.google.de/books?id=vjQvJ1EITDkC&pg=PR30&lpg=PR30&dq=The+truth+is+incontrovertible.+Malice+may+attack+it,+ignorance+may+deride+it,+but+in+the+end,+there+it+is.+source&source=bl&ots=2z1rN6iBG6&sig=ACfU3U20jzEJtXfaAFYwx1K2zhzOOFzkog&hl=de&sa=X&ved=2ahUKEwjQuemItuLpAhUNxqYKHR_LDccQ6AEwAnoECAUQAQ#v=onepage&q=The%20truth%20is%20incontrovertible.%20Malice%20may%20attack%20it%2C%20ignorance%20may%20deride%20it%2C%20but%20in%20the%20end%2C%20there%20it%20is.%20source&f=false, page xxx. ISBN: 978-1-4525-0823-8 (sc). ISBN: 978-1-4525-0824-5 (e). Bloomington, Indiana, United States of America: Balboa Press, a division of Hay House.
Disputed
Speech in the House of Commons, May 17, 1916 "Royal Assent" http://hansard.millbanksystems.com/commons/1916/may/17/royal-assent#column_1578.
Early career years (1898–1929)
On Stanley Baldwin, as cited in Churchill by Himself (2008), Ed. Langworth, PublicAffairs, p. 322 ISBN 1586486381
Also quoted by Kay Halle in Irrepressible Churchill: A Treasury of Winston Churchill's Wit http://books.google.com/books?id=b0MTAQAAIAAJ&q=%22Occasionally+he+stumbled+over+the+truth+but+hastily+picked+himself+up+and+hurried+on+as+if+nothing+had+happened%22&pg=PA133#v=onepage (1966).
The 1930s
Variant: Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.
Source: 1980s–1990s, Barbarians inside the Gates and Other Controversial Essays (1999)
“Truth may sometimes hurt, but delusion harms.”
from Rewards of Passion, quoted on Wilfred FX https://en.wikipedia.org/wiki/Wilfred_%28U.S._TV_series%29, Season 3, Episode 6
Source: Special Topics in Calamity Physics
Source: The Interpretation of Cultures (1973), p. 45
“In the hurry of business, the most able Judges are liable to err.”
Cotton v. Thurland (1793), 5 T. R. 409.
Said to portrait painter Samuel Johnson Woolf, cited in Here am I (1941), Samuel Johnson Woolf; this has often been abbreviated: Most writers regard truth as their most valuable possession, and therefore are most economical in its use.
“It's emotional warfare telling the people we love, the most, the truth about ourselves.”
MTV Unplugged 2.0, By: Lauryn Hill (2002)