First, Darwinian theory tells us how a certain amount of diversity in life forms can develop once we have various types of complex living organisms already in existence.
Phillip E. JohnsonIn short, it is not that evolutionary naturalists have been less brazen than the scientific creationists in holding science hostage, but rather that they have been infinitely more effective in getting away with it.
Phillip E. JohnsonThe 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. 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