Who said "Kindness costs nothing, but it's worth everything."?

This quote is attributed to Black Lightning.

Kindness costs nothing, but it's worth everything. - Black Lightning

"Kindness costs nothing, but it's worth everything."

Black Lightning Kindness

"I'm not a hero. I'm just a man trying to protect my family and my community."

"Power without purpose is just destruction."

"We all have choices. Some are harder than others."

"Fear is a tool. You can let it control you or use it to motivate you."

"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."