Who said "Humor's the only weapon that doesn't kill anyone."?

This quote is attributed to Catwoman.

Humor's the only weapon that doesn't kill anyone. - Catwoman

"Humor's the only weapon that doesn't kill anyone."

Catwoman Humor

"Don't be afraid. Fear is a tool. They use it against you. But if you practice it, master it, you own it."

"You know what your problem is? You always want to save everyone."

"There's no place in this world for people like you and me."

"I'm not what you'd call a 'people person.'"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."