Truth as such is not a particularly important concept in naturalistic philosophy.

To philosophical materialists God is no more than an idea in the human mind, and not a very important idea.

All the most prominent Darwinists proclaim naturalistic philosophy when they think it safe to do so.

Science...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.

Materialism sets us free from sin-by proving that there is no such thing as sin. There's just antisocial behavior, which we can control with measures like laws and educational programs.

According to the scientific naturalist version of cosmic history, nature is a permanently closed system of material effects that can never be influenced by something from outside - like God, for example.

Evolutionary biologists have been able to pretend to know how complex biological systems originated only because they treated them as black boxes. Now that biochemists have opened the black boxes and seen what is inside, they know the Darwinian theory is just a story, not a scientific explanation.