Who said "I'm just a dog trying to do what's right."?

This quote is attributed to Courage the Cowardly Dog.

I'm just a dog trying to do what's right. - Courage the Cowardly Dog

"I'm just a dog trying to do what's right."

Courage the Cowardly Dog Justice

"Courage, the cowardly dog."

"What's wrong, Muriel?"

"Oh, the things I do for love."

"Stupid Eustace!"

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."