Who said "I've learned that monsters can be defeated with love."?

This quote is attributed to Courage the Cowardly Dog.

I've learned that monsters can be defeated with love. - Courage the Cowardly Dog

"I've learned that monsters can be defeated with love."

Courage the Cowardly Dog Love

"Courage, the cowardly dog."

"What's wrong, Muriel?"

"Oh, the things I do for love."

"Stupid Eustace!"

"I love my wife, but sometimes she drives me crazy."

"Love conquers all obstacles."

"Love is patient, love is kind."

"I'm not stupid, I'm just in love!"