Why did not Indians enter White society, particularly in view of the numerous attempts by Whites to "civilize" them? The answer is that White settlers possessed no traditions and institutions comparable to the Indians' hospitality and sharing, adoption, and complete social integration.... Whites who educated Indians did so with the idea that the Indians would return to their own people as missionaries to spread the gospel, not that they might become functioning parts of White society.

Man's Rise to Civilization (1968)