The quote in the previous post is actually by zoologist and leader in the field of population genetics, Richard Lewontin. It comes from Testing the Theory of Natural Selection published in Nature on March 24, 1972, p.181.
Lewontin’s other famous quotation about science’s prior commitment to materialism comes from a book review of The Demon-Haunted World: Science as a Candle in the Dark by Carl Sagan, which is posted in full at http://www.drjbloom.com/Public%20files/Lewontin_Review.htm. It says quite a lot about Neodarwinism, quite a lot about Lewontin, a fair bit about Sagan and even a little about Richard Dawkins. I’ll return to it in a future post.