All we are doing is catching up with Darwin. He showed in the nineteenth century that we are simply animals. Humans had imagined we were a separate part of Creation, that there was some magical line between Us and Them. Darwin's theory undermined the foundations of that entire Western way of thinking about the place of our species in the universe.
Bioethicist Peter Singer, Princeton University
The War on Humans
Biology of the Second Reich
The Magician’s Twin: C.S. Lewis and the Case against Scientism
The Magician’s Twin: C.S. Lewis and Intelligent Design
The Magician’s Twin: C.S. Lewis and Evolution