The assumption that nature is all there is, and that nature has been governed by the same rules at all times and places, makes it possible for natural science to be confident that it can explain such things as how life began.
Phillip E. JohnsonDarwinism is not merely a support for naturalistic philosophy: it is a product of naturalistic philosophy.
Phillip E. JohnsonModernist discourse [...] incorporates semantic devices - such as the labeling of theism as 'religion' and naturalism as 'science' - that work to prevent a dangerous debate over fundamental assumptions from breaking out in the open.
Phillip E. JohnsonScience...has become identified with a philosophy known as materialism or scientific naturalism. This philosophy insists that nature is all there is, or at least the only thing about which we can have any knowledge. It follows that nature had to do its own creating, and that the means of creation must have included any role for God.
Phillip E. Johnson