Who said "To rule is to serve those you rule over."?

This quote is attributed to Margaery Tyrell.

To rule is to serve those you rule over. - Margaery Tyrell

"To rule is to serve those you rule over."

Margaery Tyrell Leadership

"A woman's greatest weapon is the ability to make men want to please her."

"I do love the people of the Reach, truly I do."

"The rose has thorns as well as beauty."

"Every woman wants to be a queen in her own right."

"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"