With his theory of evolution, Darwin sought to apply this philosophy of selfishness to the natural sciences. Ignoring the examples of solidarity and cooperation created by God in nature, he maintained that all living things were engaged in a ruthless struggle for survival. On the basis of no scientific evidence whatsoever, he even claimed that this same ruthlessness applied to human societies. When his theory of evolution was applied to human society, social Darwinism appeared on the scene.
The Cult of Evolution (URL) 
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