Charles Eastman said this quote

Friendship is held to be the severest test of character. It is easy, we think, to be loyal to a family and clan, whose blood is in your own veins.

~ Charles Eastman

The clan is nothing more than a larger family, with its patriarchal chief as the natural head, and the union of several clans by intermarriage and voluntary connection constitutes the tribe.

~ Charles Eastman

The family was not only the social unit, but also the unit of government.

~ Charles Eastman

More than this, even in those white men who professed religion we found much inconsistency of conduct. They spoke much of spiritual things, while seeking only the material.

~ Charles Eastman