Who said "The power of a good joke is underrated."?

This quote is attributed to Bugs Bunny.

The power of a good joke is underrated. - Bugs Bunny

"The power of a good joke is underrated."

Bugs Bunny Humor

"Ehhhhh, what's up, Doc?"

"Ain't I a stinker?"

"Of course you realize, this means war."

"If you can't be good, be careful."

"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."