Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be. Romans 8:7
"The Marxist classics considered Darwin's theory of the materialist 
explanation of biological evolution and praised it to the skies... Major pronouncements on Darwinism had been given by... leading party figures... Most importantly, evolutionary doctrine was taught as a part of the official state ideology, dialectical materialism."
— Nikolai Krementsov, Stalinist Science (1997)