Scientific literature
On natural selection.
Dawkins, Richard. The Blind Watchmaker. Norton & Company, 1986, ch. 1.
Dawkins, Richard. The Selfish Gene. Oxford University Press, 1976, ch. 1.
Dawkins, Richard. The Selfish Gene. Oxford University Press, 1976, ch. 2.
Peirce, Benjamin. Linear Associative Algebra. Van Nostrand, 1882, sect. 1.
Hawking, Steven. A Brief History of Time: From the Big Bang to Black Holes. Bantam Dell Publishing Group, 1988, conclusion.
Einstein, Albert. Quoted in The Universe and Dr. Eistein. Written by Lincoln Barnett. Sloane, 1950. Originally printed in Harpers, 1948.
The Philosophy of the Inductive Sciences
Whewell, William. The Philosophy of the Inductive Sciences: Founded Upon Their History. Vol. 1, London: John W. Parker, 1840.
Whewell, William. The Philosophy of the Inductive Sciences: Founded Upon Their History. Vol. 1, Cambridge University Press, 2014.
Russell, Bertrand. "The Study of Mathematics." The New Quarterly, Nov. 1907.
Spencer, Herbert. The Principles of Biology. Vol. 1, London: Williams and Norgate, 1864, pt. 3, ch. 2.
Huxley, Thomas Henry. "The Method of Zadig." 1880, Working Men's College, London, England, UK. Lecture.
Whitehead, Alfred North. An Introduction to Mathematics. Henry Holt and Company/Williams and Norgate, 1911, ch. 5.
Laplace, Pierre-Simon. Theorie Analytique des Probabilities [Analytic Theory of Probability]. Paris: Madame Va Courcier, 1812.
Gould, Stephen Jay. Wonderful Life: The Burgess Shale and the Nature of History. W. W. Norton & Co., 1989, ch. 1.
Russell, Bertrand. "The Study of Mathematics." The New Quarterly, Nov. 1907.
Russell, Bertrand. The Basic Writings of Bertrand Russell, edited by Robert E. Egner and Lester E. Denonn. Routledge, 2009, ch. 31.
Hawking, Steven. A Brief History of Time: From the Big Bang to Black Holes. Bantam Dell Publishing Group, 1988, conclusion.
Planck, Max. The Philosophy of Physics. London: George Allen & Unwin, 1936.
Jeans, James. The Mysterious Universe. Cambridge University Press/Macmillan, 1930, ch. 1.
Crick, Frances. The Astonishing Hypothesis: The Scientific Search for the Soul. Charles Scribner's Sons, 1994, ch. 1.
Alvarez, Luis Walter. Quoted in The Politics of Pure Science, written by Daniel S. Greenberg. New American Library, 1967.
Proposing the double helix as the structure of DNA.
Crick, Francis and James D. Watson. "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid." Nature, 25 Apr. 1953.