Who said "Gratitude is the mark of a true leader."?

This quote is attributed to Black Bolt.

Gratitude is the mark of a true leader. - Black Bolt

"Gratitude is the mark of a true leader."

Black Bolt Gratitude

"My silence speaks louder than words ever could."

"Power without control is chaos."

"I lead through action, not words."

"Family is everything to me."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"