> There is no other race than the human race.
I love this line because it actually runs contrary to Darwin's theory AT IT'S CORE.
In short, Darwin discovered that species undergo random mutations which make the more or less evolutionarily fit, and some flourish while others die out - leading to an "evolution" of the species.
Concretely this means that any given mutation "splits" a species into those which have it and those which don't. If the mutation is eugenic, then those with it compete better, if it's dysgenic then it's the other way.
If the human species is subject to mutations, then it has "splits", which means there are different "groups" (i.e. races). If it's not, then you don't believe in evolution.
