Who said "A leader who doesn't listen will eventually stand alone."?

This quote is attributed to Aquaman (DCEU).

A leader who doesn't listen will eventually stand alone. - Aquaman (DCEU)

"A leader who doesn't listen will eventually stand alone."

Aquaman (DCEU) Leadership

"I'm a king. Kings don't run."

"The surface world has much to learn about respect."

"My people have watched you from below for centuries."

"I didn't come here to fight you."

"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"