If one sees a great crowd, one should thank God for not having made them all of one mind. For just as each person's face is different from another, so is each person's mind different from any other mind.
(Babylonian Talmud Berakhot 58a)
God formed Adam out of dust from all over the world: yellow clay, white sand, black loam, and red soil. Therefore, no one can declare to any race or color of people that they do not belong here since this soil is not their home.
(Yalkut Shimoni, 1:13)