"if that is what evolution is, bill, then creationists believe in evolution!. I should have thought it is more properly natural selection."

Charles Darwin certainly believed in natural selection it was part of the original title of his book. "Natural selection" was his major contribution to science.

From the Wiki article on the book....

On the Origin of Species, published on 24 November 1859, is a work of scientific literature by Charles Darwin which is considered to be the foundation of evolutionary biology. Its full title was


On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life.