Who said "Kindness is the most powerful force in existence."?

This quote is attributed to Skanderbeg.

Kindness is the most powerful force in existence. - Skanderbeg

"Kindness is the most powerful force in existence."

Skanderbeg Kindness

Military Commander Albanian 1405–1468

"I am the son of my efforts."

"A man without courage is not a man."

"Freedom is the greatest treasure."

"I fight not for gold, but for my people."

"A good man treats his wife with respect."

"Kindness always comes back around."

"The power of a smile can change everything."

"Kindness is weakness to some. Not to me."