"Most of these comments miss this person's point. He cited a page reference where Darwin himself claimed that animals and plants have the same origin."
And Darwin was, once again, correct in his reasoning.
"Who believes that plants and animals evolved from the same origin today?"
Well, I do for one. Then again, the people who really know this stuff also say it. You know, the biologists of the world.
"He could have equally argued the origin of the races according to many early evolutionists."
Possibly, but that's more of an anthropological topic. I assume this is some sort of half-assed attempt to make Darwin out to be a racist. Not that it would matter one damned bit if he were. The guy could have been Hitler himself who described evolution and it wouldn't make it wrong.
"Whites evolved from the more intelligent chimp, Blacks the more primitive ignorant gorilla and Asians from the orangutan."
Excuse me? First of all, I haven't the slightest fucking clue what you're going on about and I strongly suspect you don't either. Second, all three of those are considered highly intelligent; Orangs in particular as I understand it. I don't know of any comparative studies of their reasoning abilities but I would guess they would all be quite equal.
"When was the theory of the origin of races disproved?"
Probably shortly after someone with an inkling of common sense heard it.