Isaac Newton Quote
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Source/Notes: Theological Manuscripts: Selected and Edited with an Introd. by H. McLachlan, Sir Isaac Newton, University Press, 1950
Source/Notes: Philosophiae Naturalis Principia Mathematica (1687), Preface
Source/Notes: As quoted in: The Church of England Quarterly Review (1850), p. 142
Source/Notes: Letter to Robert Hooke (15 February 1676). Variant: "If I have seen further it is by standing on ye sholders of Giants."
Source/Notes: Isaaci Newtoni Opera quae exstant omnia, Volume 4 (1782), p. 370, "Theory of Light and Colors"
Source/Notes: Philosophiae Naturalis Principia Mathematica (1687), Laws of Motion, III


Source/Notes: Variant: izquotes.com/quotes/255708

Source/Notes: Rules of Reasoning in Philosophy : Rule I - Philosophiae Naturalis Principia Mathematica (1687)
Source/Notes: Plato is my friend — Aristotle is my friend — but my greatest friend is truth.

Source/Notes: Statement from unpublished notes for the Preface to Opticks (1704)
Source/Notes: Newton's response, whenever Edmond Halley would say anything disrespectful of religion. As quoted in: The Life of Sir Isaac Newton (1831) by Sir David Brewster

Source/Notes: Memoirs of the Life, Writings, and Discoveries of Sir Isaac Newton (1855) by Sir David Brewster (Volume II. Ch. 27)
Source/Notes: This is from an anecdote found in St. Nicholas magazine, Vol. 5, No. 4, (February 1878)