Well, if you look at evolution as God designing animals deliberately to evolve and then go extinct with him controlling their mutations and the environment, it's a little like him playing keys on a piano.I don't know about Darwin, but perhaps the Patriarch simply means that evolution is true for other animals but not humans. Thus, it has no religious import.
In that sense, you could view natural selection as fundamentally within the purview of God for the purpose of showing us a beautiful and lasting natural creation, and not a concept or doctrine we should follow ourselves.
Think of forest fires are a necessary affair, yet revolutions are not, because God calls us not to rebel, but reform. We don't need to be like nature, because we can follow God.