Who said "Strength isn't just physical—it's mental and moral."?

This quote is attributed to Superman.

Strength isn't just physical—it's mental and moral. - Superman

"Strength isn't just physical—it's mental and moral."

Superman Strength

"I'm here to fight for truth and justice, and all that stuff."

"It's not who I am underneath, but what I do that defines me."

"The world doesn't need a savior, but it could use a friend."

"Even in darkness, there is always hope."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."