"If the only rule afforded by nature for classing animals can be depended upon, there are different species of men as well as of dogs: a mastiff differs not more from a spaniel, than a white man from a negro, or a Laplander from a Dane. And if we have any belief in Providence, it ought to be so."
January 1, 1970
https://en.wikiquote.org/wiki/Scientific_racism