Nature Knows No Color-Line : Research Into the Negro Ancestry in the White Race Rogers, J. A.In Nature Knows No Color Line, originally published in 1952, historian Joel Augustus Rogers examined the origins of racial hierarchy and the color problem. Rogers was a humanist who believed that there were no scientifically evident racial divisionsall humans belong to one ""race."" He believed that color prejudice generally evolved from issues of domination and power between two physiologically different groups. According to Rogers, color prejudice