[from The Origin of Species, 1859]
[from a lecture given in Paris, 1921]
[from The Divine Milieu, 1927]
[from Biology of Ultimate Concern , 1967]
[from Physics and Beyond, 1971]
[from The Wall Street Journal, March 11, 2005]
[from a Lecture given at Grottaferrata ( Italy ), in 1972]
[from a letter to Mr. Grose, September 14, 1972]
[interview given in 1997]
[from American Paleontologist 5, 1997]
[from The New Physics and a New Theology, 1996]