Who said "To lead is to serve, not to command."?

This quote is attributed to Leonidas I.

To lead is to serve, not to command. - Leonidas I

"To lead is to serve, not to command."

Leonidas I Leadership

King Warrior Ancient Greece 540–480

"This is Sparta!"

"Spartans! Tonight we dine in hell!"

"A man's true measure is taken not in a moment of comfort and convenience, but in a moment of challenge and adversity."

"Freedom isn't free, it requires sacrifice and courage."

"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"