"For instance, when a Negro behaves in a certain way we say, “Oh well, he's only a Negro,” but if a white man behaves in the same way we say, “That man is crazy,” because a white man cannot behave like that. A Negro is expected to do such things but a white man does not do them. To be “crazy” is a social concept; we use social restrictions and definitions in order to distinguish mental disturbances"

- ~Carl Jung, CW 18, Para 72