| Published Sources for
the above Quotations: |
| F: |
"Letter to Robert Hooke, 5 Feb. 1675/76; In "The Correspondence of Isaac Newton," ed. by H. W. Turnbull and J. F. Scott, 1959-1974." |
| R: |
Attributed |
| A: |
"In <a href="http://www.cyber-nation.com/cgi-bin/victory/quotations/qlreferral/quotelib.pl?id=10115">The Ultimate Success Quotations Library</a>, 1997." |
| N: |
"In "Shorter Bartlett's Familiar Quotations," by John Bartlett, 1937, 1980, 1992." |
| K: |
"third law of motion, 'Principia mathematica', A. Motte, transl." |
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