Who said "A true leader serves those he guides, not himself."?

This quote is attributed to Luís de Camões.

A true leader serves those he guides, not himself. - Luís de Camões

"A true leader serves those he guides, not himself."

Luís de Camões Leadership

Poet Portuguese 1524–1580

"Love is the great mover of all things."

"The brave man is not he who does not feel afraid, but he who conquers that fear."

"Time is the fire in which we burn."

"Fortune favors the bold."

"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"