Who said "A leader serves his people, not himself."?

This quote is attributed to Crazy Horse.

A leader serves his people, not himself. - Crazy Horse

"A leader serves his people, not himself."

Crazy Horse Leadership

Military Warrior Native American 1840–1877

"A warrior's heart knows no defeat."

"The earth is the mother of all people."

"We did not ask you white men to come here. The Great Spirit gave us this country as a home."

"Behold, I am poor and naked, but I am the chief of the nation."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"