Updated July 16, 2006
In his article entitled "The Myth of Scientific Objectivity" (The Jewish Observer, May 2006), Rabbi Yonoson Rosenblum quotes the following sentence from the brochure for the British Museum of Natural History's 1981 exhibit on Darwin:
Evolution by natural selection is not, strictly speaking, scientific, because it is established by logical deduction rather than empirical demonstration.
I don't know whether natural selection is "scientific" - that's an uninteresting semantic debate. The important, and true, point, in my estimation, is that natural selection's being the exclusive origin of species is qualitatively different from most other scientific theses. I've tried to express this idea on several occasions; this brochure did it nicely.