Naturalism shouldn't be confused with science. Naturalism is a late 19th- and early 20th-century aesthetic movement inspired by adaptation of the principles and methods of natural science, especially the Darwinian view of nature, to literature and art. In other words, naturalism is a philosophy based upon science, not the other way around. Unlike naturalism, science does not specifically exclude the supernatural, but merely confines itself to that for which there is evidence detectable by human senses.
--Percy