Due to recent discussion on evolution and Darwin's intentions, I want to draw attention to a post that Phil Ryken wrote at Reformation 21 a while back. Ryken points out the significance of the title of Darwin’s magnum opus The Origin of the Species in light of it's subtitle. The subtitle? The Preservation of Favored Races in the Struggle for Life. Dr. Ryken shows that there is an undeniable relation between the philosophy behind eugenics, euthanasia and racism and the philosophy set out in Origin of the Species. You can read Dr. Ryken’s post here. In that post, he references the following quote from Darwin:

"With savages, the weak in body or mind are eliminated; and those that survive commonly exhibit a vigorous state of health. We civilised men, on the other hand, do our utmost to check the process of elimination; we build asylums for the imbecile, the maimed, and the sick; we institute poor-laws; and our medical men exert their utmost skill to save the life of every one to the last moment. There is reason to believe that vaccination has preserved thousands, who from a weak constitution would formerly have succumbed to small-pox. Thus the weak members of civilised societies propagate their kind. No one who has attended to the breeding of domestic animals will doubt that this must be highly injurious to the race of man. It is surprising how soon a want of care, or care wrongly directed, leads to the degeneration of a domestic race; but excepting in the case of man himself, hardly any one is so ignorant as to allow his worst animals to breed."

With regard to the racism inherent in Darwin's worldview, note what he says in The Descent of Man beginning with his section titled, "On the Formation of the Races of Man."