In 1856, just prior to Charles Darwin writing of Origin of Species, Darwin stated, "What a book a Devil's Chaplain might write on the clumsy, wasteful, blundering low & horridly cruel works of nature!"
Darwin embraced materialism as part of the social revolution of his day. The philosophy of materialism posits the idea, that there is nothing more to the human being than matter, that spirit is connected to religious believe and non-existent, that the body and it's brain are just made up of matter.
Darwin viewed his work upon society simply as 'a murder.' Darwin came to the conclusion about his work "I am almost convinced (quite contrary to the opinion I started with) that species are not (it is like confessing a murder) immutable." A colleague of Darwin corrected him, "Not murder, but helpless manslaughter."
Darwin's view of Christianity was against divine revelation. Concerning Christianity he stated that he could not 'see how anyone ought to wish Christianity to be true.' He felt that God and immortality are not justified.. Inward 'convictions' and 'feelings' concerning the divine are unreliable because the human mind had evolved.
Darwin bemoaned that "half the fools throughout Europe write to ask me the stupidest questions." He then declared in a letter, "I am sorry to have to inform you that I do not believe in the Bible as a divine revelation, & therefore not in Jesus Christ as the Son of God."
As his biographers declare "Society would never be the same. The 'Devil's Chaplain' had done his work." The 'Devil's Chaplain' indeed!
Quotes taken from Darwin The Life of a Tormented Evolutionist by Adrian Desmond and James Moore