@pzmyers We need great communicators. It should be up to us to try to find the sources. Gould was a pleasure to read and I learned a lot. Citing every source would have been a distraction.
My son is an Evo biologist graduating next month from Harvard. He and I talk about Gould but not so much about Dawkins. He has a blog (my son) and I like that anyone can read what he writes. Even children. Citing every sentence would take away the fun and the learning.
@Depsilor you forgot to cite his blog!