Alfred North Whitehead
Whitehead, Alfred North. Dialogues of Alfred North Whitehead, edited by Lucien Price. David. R. Godine, 2008, ch. 22. Originally from dialogue with Lucien Price, 30 Aug. 1941.
Whitehead, Alfred North. "Process and Reality: An Essay in Cosmology." Gifford Lecture. 1927–1928, University of Edinburgh, Edinburgh, Scotland.
Whitehead, Alfred North. Process and Reality. Simon and Schuster, 2010, pt. 2, ch. 1, sec. 1.
Whitehead, Alfred North. "Religion and Science." Lowell lecture. Feb. 1925, Phillips Brooks House, Harvard University, Cambridge, MA, USA.
An Introduction to Mathematics
Whitehead, Alfred North. An Introduction to Mathematics. Henry Holt and Company/Williams and Norgate, 1911, ch. 5.
Whitehead, Alfred North. "Process and Reality: An Essay in Cosmology." Gifford Lecture. 1927–1928, University of Edinburgh, Edinburgh, Scotland.
Whitehead, Alfred North. Process and Reality. Simon and Schuster, 2010, pt. 1, ch. 1, sec. 3.
Whitehead, Alfred North. An Introduction to Mathematics. Henry Holt and Company/Williams and Norgate, 1911, ch. 5.
Whitehead, Alfred North. Adventures of Ideas. The Macmillan Company/Simon and Schuster, 1933, ch. 19, sec. 1.
Whitehead, Alfred North. Adventures of Ideas. The Macmillan Company/Simon and Schuster, 1933, ch. 16, sec. 3.
Whitehead, Alfred North. "Mathematics as an Element in the History of Thought." Lecture before the Mathematical Society. 1925, Brown University, Providence, RI, USA.