Who said "Even in darkness, you can find a reason to smile."?

This quote is attributed to Courage the Cowardly Dog.

Even in darkness, you can find a reason to smile. - Courage the Cowardly Dog

"Even in darkness, you can find a reason to smile."

Courage the Cowardly Dog Happiness

"Courage, the cowardly dog."

"What's wrong, Muriel?"

"Oh, the things I do for love."

"Stupid Eustace!"

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."