Galileo Galilei Quote
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Source/Notes: This quote is a paraphrase of a conversation between two characters in Galileo's book "Dialogue Concerning the Two Chief World Systems" (1632): "SALVIATI: Now you see how easy it is to understand. / SAGREGO: So are all truths, once they are discovered."
Source/Notes: "Eppur si muove." - Supposedly said in 1632 before the Inquisition after being forced to deny that the earth moves around the sun. Earliest report of this quote can be found in the book "The Italian Library" by Giuseppe Baretti, published in 1757.
Source/Notes: Paraphrase. Dialogue Concerning the Two Chief World Systems (1632), "The First Day"

Source/Notes: Dialogues Concerning Two New Sciences by Galileo Galilei, translated by Henry Crew and Alfonso De Salvio, Cosimo, Inc., 2010 edition, p. 5, "First Day" - ISBN: 9781616401894

Source/Notes: Letter to the Grand Duchess Christina (1615)
Source/Notes: Attributed. Earliest attribution found: The Story of Civilization: The Age of Reason Begins, 1558-1648 (1935) by Will Durant, p. 605

Source/Notes: Recantation (June 22, 1633). Reported in: "The Encyclopædia Britannica, or, Dictionary of arts, sciences, and general literature, Volume 10" (1856), p. 377




Source/Notes: As quoted in: The Astronomers, Colin A. Ronan, Hill and Wang, 1964, p. 152