Who said "I can't do this alone."?

This quote is attributed to Courage the Cowardly Dog.

I can't do this alone. - Courage the Cowardly Dog

"I can't do this alone."

Courage the Cowardly Dog Hope

"Courage, the cowardly dog."

"What's wrong, Muriel?"

"Oh, the things I do for love."

"Stupid Eustace!"

"Every day is a new opportunity."

"Hope is what gets us through difficult times."

"I'm not your enemy, kid. I'm trying to save you."

"Redemption is a long road."